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Archive for the ‘Longevity Genetics’ Category

Purdue taking part in life-long study of dogs health and aging – WTHR

Sunday, December 8th, 2019

WEST LAFAYETTE, Ind. (WTHR) Researchers are looking for America's oldest dog.

They don't want to teach him new tricks, but they are hoping he could teach them a few things.

And your dog could be part of their life-long scientific study that's looking to learn from pets nationwide.

More than 40 scientists and researchers from across the United States including one from Purdue University are looking for dogs to participate the national study of the general health and wellness of dogs.

The Dog Aging Project will be looking at dogs of all breeds and mixes from across the nation. This is the first major longitudinal study involving dogs, and it's scheduled to last at least 10 years.

We are going to look at a lot of different aspects of dogs lives that affect their health and longevity, says Audrey Ruple, a veterinary epidemiologist at Purdue.

Dogs are good models for humans, she says. They have similar genetics, share our environment, and they also have similar diseases and health issues. We will be asking, How do dogs age healthfully? in order to help better understand how we can age healthfully, too.

Dogs of all age ranges, breeds and sizes are eligible to participate in the study. Owners go online to register their dogs, then create a personal profile to track health, home life, diet, environment and lifestyle.

Dogs will need to make regular veterinarian visits every year. If a dog is assigned to a specific group, the owners may get a kit for their veterinarian to collect blood, urine or other samples during the annual visit.

Participation is voluntary and there is no cost to participate.

Its important to get dogs from all parts of the U.S. because of the different environmental factors present, Ruple said. And were trying to find the oldest dog in America, as well.

All dogs registered will be eligible to participate in various studies. The group conducted a soft launch with 4,500 dogs registered earlier this fall. Recently, the researchers reached 75,000 dogs for the study.

Our study population just keeps growing and growing and growing, Ruple said.

Researchers hope to find out more details on how genetics, demographics and environmental factors such as chemical exposures and noise pollution impact health and longevity.

Ruple says one goal of the study is to not just improve the health and longevity of dogs, but also extend those findings to improve human health. By studying aging in dogs, we hope to learn how to better match human health span to life span so that we can all live longer, healthier lives, Ruple said.

Funding for the Dog Aging Project comes from the National Institute of Aging, a part of the National Institutes of Health, as well as from private donations.

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Fascinating Study Finds That Stressed Out Baby Worms Tend to Live Longer – ScienceAlert

Sunday, December 8th, 2019

Scientists researching a key aspect of biochemistry in living creatures have been taking a very close look at the tiny Caenorhabditis elegans roundworm. Their latest results show that when these nematodes get put under more biochemical stress early in their lives, they somehow tend to live longer.

This type of stress, called oxidative stress - an imbalance of oxygen-containing molecules that can result in cellular and tissue damage - seems to better prepare the worms for the strains of later life, along the same lines as the old adage that whatever doesn't kill you, makes you stronger.

You might think that worm lifespans have no bearing on human life. And surely, until we have loads more research done in this field, it would be a big leap to say the same principles of prolonging one's lifespan might hold true for human beings.

But there's good reason to put C. elegans through the paces. This model organism has proven immensely helpful for researchers trying to better understand key biological functions present in worm and human alike - and oxidative stress is one such function.

The little wriggly creatures are known to have significant variations in their lifespan even when the whole population is genetically identical and grows up in the exact same conditions. So the team went looking for other factors that affect C. elegans' longevity.

"The general idea that early life events have such profound, positive effects later in life is truly fascinating," says biochemist Ursula Jakob from the University of Michigan.

Jakob and her colleagues sorted thousands of C. elegans larvae based on the oxidative stress levels they experienced during development this stress arises when cells produce more oxidants and free radicals than they can handle. It's a normal part of the ageing process, but it's also triggered by exercise and a limited food supply.

One way to measure this stress is by the levels of reactive oxygen species (ROS) molecules an organism produces - simply put, this measurement indicates the biochemical stress an organism is under. In the case of these roundworms, the more ROS were produced during development, the longer their lifespans turned out to be.

(University of Michigan)

To explain how this effect of ROS might come about, the researchers went looking for changes in the worms' genetic regulation, specifically those genes that are known to be involved in dealing with oxidative stress.

While doing so, they detected a key difference - the nematodes exposed to more ROS during development appeared to have undergone an epigenetic change (a gene expression switch that can happen due to environmental influences) thatincreased the oxidative stress resistance of their body's cells.

There are still a lot of questions to answer, but the researchers think their results identify one of the stochastic or random influences on the lifespan of organisms; it's something that has been hypothesised in the field of the genetics of ageing. And down the line, it may turn out to be relevant for ageing humans, too.

"This study provides a foundation for future work in mammals, in which very early and transient metabolic events in life seem to have equally profound impacts on lifespan," the researchers conclude.

The study has been published in Nature.

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Dairy lifespan index trait updated to improve accuracy – FarmersWeekly

Sunday, December 8th, 2019

The genetic index that predicts dairy cattle lifespan has been revamped to make it more accurate and indicate longevity in additional days rather than lactations.

The change will help dairy cattle breeders identify bulls whose offspring should live more healthy, productive and longer lives in their herds.

Previously, lifespan was expressed in lactations, which meant very little difference between the best and worst animals.

The indexs scale has now been increased to about -305 to +305 days, enabling producers to make more precise decisions.

The update to the lifespan index takes effect from the December AHDB Dairy proof run, which will be published this week (3 December).

See also:How to achieve an efficient dairy breeding programme

Marco Winters, head of animal genetics with AHDB Dairy, said: The new figures give producers a more meaningful prediction of the extra lifetime expected from a bulls daughters and make a greater distinction between individual bulls.

Lifespan reflects many contributory factors, ranging from fertility and somatic cell counts to leg, feet and udder conformation. The index has a strong correlation with an animals average daily lifetime yield, which is a key contributor to its lifetime profitability.

By helping to differentiate individual sires and moving to a larger and more meaningful scale, we feel confident we can further increase genetic progress for this trait, so cutting a herds replacement rate and its costs of heifer rearing, Mr Winters added.

Why is lifespan so important?

It is estimated to cost more than 1,800 to rear a Holstein dairy heifer from birth to the point of calving. About 70% of farmers pay back this investment during the animals second lactation.

More precisely, the average number of days at which payback occurs is a staggering 530 after first calving.

So any measures that can extend an animals productive life beyond this point will help improve its return on the large initial investment.

Using the lifespan index when breeding cattle can help producers improve their herds survival rates by hundreds of days.

How does the new scale work?

The new scale for lifespan index will run from about -305 days to +305 days, with positive figures being desirable.

Daughters of a +305 lifespan index bull are predicted to live, on average, 305 days longer than daughters of a sire whose index is zero.

Equally, they are predicted to live 610 days longer than daughters of a -305 lifespan index bull. As with all UK genetic indexes, zero represents the average.

How are lifespan indexes calculated?

The index is calculated from actual daughter survival, when that information is available.

When it is not, it is either calculated from the animals own genotype (if it has a genomic index), or from predictive traits such as type traits (legs, feet and udders) and somatic cell count index, all of which are correlated with lifespan.

Where necessary, information on ancestors lifespan will also be included in the calculation of the index.

This and all other predictors will diminish in their importance as the animal acquires progeny lifespan information of its own.

Arent many animals culled for low production rather than survivability?

An important feature of the lifespan index is that it predicts involuntary rather than voluntary culling.

As there is such a strong relationship between milk production and lifespan (because low producers are generally culled earlier from the herd), lifespan index is corrected for milk production.

This correction ensures the index is more a measure of daughters ability to survive than of their failure to produce milk, which itself would be apparent from predicted transmitting abilities (PTAs) for production.

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What’s the minimum amount of exercise I need to do to see results? – Richmond Register

Sunday, December 8th, 2019

It's that time of year with Thanksgiving just over and Christmas approaching that many of us tend to cut back on our exercise routines in order to enjoy the holidays with family and friends. So how much and how often do you need to work out to improve your health and fitness? There's not a simple answer to that question but there are several guidelines to follow that have been found through research.

First of all, it's important to accept that when it comes to moving, something is always better than nothing. Every rep, set and second that you move will get you much closer to your goals. Many research studies, most recently an August 2019 review published in the British Medical Journal, have shown that any exercise comes with a lower risk of early death. Interestingly, researchers have noted that the dose-response relationship between exercise and longevity is non-linear, meaning that going from zero to 15 minutes of exercise per day is more beneficial than going from 60 to 75 minutes. Moreover, the 2018 Physical Activity Guidelines for Americans edited its recommendation that physical activity occur in bouts of at least 10 minutes. Now, every single second of activity counts toward its weekly recommendation. That recommendation calls for at least 150 minutes a week of moderate-intensity aerobic activity (such as brisk walking), plus at least two days a week of total body strengthening activities. If activity is more intense, such as running or sprinting on a stationary bike, as little as 75 minutes may be enough. It's important to realize that these guidelines refer to the minimum amount necessary for good health, not to significantly improve fitness.

So how do you know how much your personal bare minimum is for improving fitness? That depends of several factors, including age, gender and genetics. For example, it takes less time and effort to make fitness gains when you're young, a time when your body has higher base levels of muscle, testosterone, growth hormone and bone mass. Fortunately for women, a 2011 study in the American Journal of Human Biology found that even though women have lower base levels of muscle mass, they are able to make similar percentage gains in muscle mass compared with men. In terms of genetics, it is true that some people can improve fitness faster and to a greater extent than others. Hopefully, you won that genetic lottery. It is also true that everyone has a genetic upper limit to their fitness potential. And the closer you are to that limit, the more challenging it is to continue making progress toward it.

In the first few months of a new training program, especially one focusing on strength development, you can expect to make big gains in strength quickly as your neuromuscular system learns how to execute the exercises more efficiently. It's also important to realize that during this time, despite increases in strength, muscle growth isn't as pronounced. After a couple of months though, further increases in strength are mainly due to muscle growth as the neuromuscular system adapts to your exercise routine.

Specifically, if you want to build muscle, as little as two 20 to 30 minute sessions may be enough to start to see some muscle definition. That means training each muscle group twice a week. If you want to maintain the muscle you already have, then once a week may be enough. To get the most out of each session, focus on large multi-joint movements such as squats, deadlifts, rows and push-ups rather than isolation exercises like biceps curls and leg extensions.

If your goal is to keep your heart healthy, lower blood pressure or cholesterol, then the federal guidelines' bare minimum may not be adequate. The American Heart Association recommends at least 40 minutes of moderate intensity aerobic activity three to four times a week. Before starting such a routine, it is important to check with your health care provider to make sure that it's safe to pursue this level of activity. The good news is that significant improvements in cardiovascular fitness can be expected relatively quickly, in the neighborhood of three to four weeks.

So as you contemplate your exercise routine during the holidays, keep in mind that what you do between Thanksgiving and Christmas is not as important as what you do between Christmas and Thanksgiving.

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What's the minimum amount of exercise I need to do to see results? - Richmond Register

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BelleCell: the ‘bio-hacking’ clinic aiming to shake up wellness – The Times

Sunday, December 8th, 2019

BelleCell in London

Ive seen the future. And its unexpectedly sandwiched between those exuberant bastions of indulgence, the Ritz and Le Caprice. Rather like Harry Potters Platform 9 at Kings Cross, look carefully and theres a spiral staircase to a subterranean world. Once a cellar that housed Winston Churchills wine collection, it is now a series of neon-lit vaulted passages filled with white-coated therapists and space-age machines. This is the home of Londons first biohacking clinic.

BelleCell is the creation of Kasia Zajkowska, a Polish bioscientist and Cambridge graduate who specialised in genetics and molecular biotechnology and who looks as if she could be Bella Hadids sister. Ill have what shes having. Fifteen years ago science was focused on increasing the human life span, Zajkowska says. Now its

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Watch a Dragon launch towards the International Space Station today! – Massive Science

Sunday, December 8th, 2019

It's easy to give thoughtless gifts. This year, give thoughtful gifts: science gifts! They're experimentally validated as wonderful*. This is Massive's 2019 holiday science shopping guide, with cool stuff from all around the science web, for Thanksgiving, Black Friday, Christmas, and beyond.

Illustrated by Matteo Farinella, Designed by Allan Lasser

Massive Science

Oh wow, so weird to see us at the top here. The coolest thing on this list is definitely the Women of Science Tarot deck we made. The deck features is itself a work of art, with beautiful original work from Matteo Farinella. Instead of the traditional face cards of many tarot decks, instead there are portraits of important women in science's history, including Mae Jemison, Rachel Carson, Marie Curie, Ada Lovelace, and more. If the the $75 price tag is too steep, there are also postcard packs with art from the deck and posters!

Genius Games

The geniuses at Genius Games make science-themed board games and card games. In Virulence, take on the role of a virus and replicate. Build atoms in Subatomic. Or, become the world's first programmers in Lovelace & Babbage. Massive has partnered with Genius Games to offer a 20% off coupon, just use the code MassiveScience20!

Courtesy of Genius Games

Two Photon

The undisputed champion of science art, pins, jewelry, and more. Our favorites include the neuroscience section, with brain pins and neuron necklaces, the virus t-shirt, and the nameplate necklaces, with options like "Scientist", "Doctor", and "Programmer."

Stitching Hew

What really sets Stitching Hew apart are their intricate stitch patterns, especially the Brainbrow Pyramidal Neuron Print, detailed enough to make Cajal blush. There are even downloadable stitch patterns or an entire beginner's science hand embroidery kit.

Rachel Ignotofsky

The prolific author and illustrator made one of our favorite books, Women in Science: 50 Fearless Pioneers Who Changed the World. But she also has other books, like Women in Art: 50 Fearless Creatives Who Changed the World, along with a whole pile of beautiful art prints to choose from.

Science On A Postcard

If you're looking for an enamel pin to signal your allegiance to a particular scientific field, then this Etsy shop is for you! Packed with notebooks, postcards, stickers and an even a pocket mirror, the Science On A Postcard shop hosts some of our favourite pins, including ones that say science communicator, future scientist and that climate change is real.

Awkward Yeti

You've undoubtedly seen their comics all over the great wide web, but Awkward Yeti's store is packed with goodies. There's tabletop games for the gamer who loves organs, some of the best stuffed organs (okay, the only stuffed organs) we've seen, like a uterus and an irritable bowel, and prints from the comic.

Courtesy of Awkward Yeti

Waterlust

You don't have to be a marine scientist to love their products. Waterlust carries leggings (with pockets!), rashguards and swim tops, board shorts, and more for people who love being in the water. Their products are great on land too the fabric is soft and stretchy, and the leggings and shorts have a wide waistband that makes them incredibly comfortable for lounging around the house or going to the gym. Each pattern is dedicated to a specific marine conservation cause (my favorite is the Floridian Aquifer collection). Their products are partially made from recycled plastic bottles and the gear is shipped in eco-friendly packaging, making Waterlust a great choice for the outdoor enthusiasts in your life!

PurpleLilacAmigurumi

This science crochet shop is run by a PhD student at the University of Toronto, so you know the plushies are accurate. Oh and they're lovely too. Take the crocheted neuron necklace, or our personal favorite, the Islets of Langerhans crochet pattern.

Skype a Scientist

Skype a Scientist is one of the best science outreach organizations we know of and they have the merch to match. If you love snakes and also Greek myths, consider this Medusa-as-a-scientist t-shirt. Or rather, if you're more of an astrobiology person, maybe the hardy tardigrade is more your speed.

The Vexed Muddler

If you're interested in science-themed underwear, this is the store for you. Consider the Maratus volans (aka the peacock spider) boxer briefs, which to be honest are kind of terrifying. If that's not your thing they also have phylogenetic tree skirts, intergalactic space dresses, and oh what the heck here's black widow underwear.

Slow Dance

Perhaps something a bit more...meditative? Slow Dance is a frame that produces slow-motion, real-time movement. The creators say it helps lower stress and is quite good for meditation (we weren't just being cute).

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Watch a Dragon launch towards the International Space Station today! - Massive Science

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How do consumer DNA tests from the US and China stack up? – Abacus

Saturday, November 30th, 2019

Spitting intotheplastic test tube, I felt nervous. I was offering up a piece of myself for decoding, and while this timethere was no silver-haired sage, it reminded me of a visit to a fortune teller when I was 21.

Then, I offeredthepalm of my hand in a bid to divine what fate had planned for me. Now, it wasDNA, with my saliva destined for a laboratory in southwest China, totheheadquarters ofChengdu 23Mofang Biotechnology Co., a startup thats seeking to tap a boom in consumer genetics intheworlds most populous nation.

Rising awareness of genetically-linked diseases like Alzheimers and a natural human curiosity for insight intothefuture is fueling a global market for direct-to-consumerDNAtesting thats predicted totripleoverthenext six years. In China, wherethegovernment has embraced genetics as part of its push to become a scientific superpower,theindustry is expected to see US$405 million in sales by 2022, according to Beijing research firm EO Intelligence, an eight-fold increase from 2018. Some 4 million people will send away test tubes of spit in China this year, and I had just become one ofthem.

Not only was I entering a world where lack of regulation has spawned an entire industry devoted to identifyingthefuture talents of newborn babiesthroughtheir genes, I was handing over my genetic code to a country wherethegovernment has been accused of usingDNAtesting to profile minority groups a concern that hit home whentheresults showed I was a member of one.

I wanted to see whethertheburgeoning industry delivered on its claims in China, where scientists have gained international attention and criticism for pushingtheboundaries of genetics. And as a child of Vietnamese immigrants totheUS, Ive long been curious about my ancestry and genetic makeup.

To get an idea of how this phenomenon is playing out intheworlds two biggest consumer markets, I comparedtheDNAtesting experience of 23Mofang withthefirm CEO Zhou Kun says it was inspired by:23andMe Inc., one ofthebest known consumer genetics outfits intheUS.

PushingtheEnvelope

Thedifferences betweenthetwo companies are stark.

23andMe was co-founded byAnne Wojcicki, a Wall Street biotech analyst once married toGoogleco-founderSergey Brin.TheMountain View, California-based firm has more than 10 million customers and has collected 1 billion genetic data points, according to itswebsite. Brin and Google were early investors.

By contrast, 23Mofang is run out oftheChinese city of Chengdu, and Zhou, 36, is a computer science graduate who createdthecompany after becoming convinced Chinas next boom would be inthelife sciences sector. 23Mofang expects to have 700,000 customers bytheend of this year, a number he projects will at least double in 2020.

Thedivergence betweenthetwo countries andtheir regulation oftheindustry is just as palpable. Chinas race to dominate genetics has seen it push ethical envelopes, with scientistHe Jiankuisparking a global outcry last year by claiming to have editedthegenes of twin baby girls.Theexperiment, which He said madethem immune to HIV, put a spotlight on Chinas laissez-faire approach to regulating genetic science andthebusinesses that have sprung up around it.

When my reports came back, 23Mofangs analysis was much more ambitious than its American peer. Its results gauged how long I will live, diagnosed a high propensity for saggy skin (recommending I use products including Olay and Estee Lauder creams) and gave me an optimist not prone to mood swings a higher-than-average risk of developing bipolar disorder. 23andMe doesnt assess mental illness, which Gil McVean, a geneticist at Oxford University, says is highly influenced by both environmental and genetic factors.

Thefortune teller who pored over my palm told me I would live to be a very old woman. 23Mofang initially said I had a better-than-average chance of living to 95, before revisingtheresults to say 58% of clients hadthesame results as I did, making me not that special, and perhaps not that long-living.

When I ranthefinding pastEric Topol, a geneticist who foundedtheScripps Research Translational Institute in La Jolla, California, he laughed. Ninety-five years old?Theres no way to put a number on longevity, he said. Its a gimmick. Its so ridiculous.

Zhou saidtheaccuracy ofthelongevity analysis, based on a 2014 genetics paper, is not too bad, thoughthecompany plans to updatetheanalysis with research thats being undertaken on Chinese elderly.

But when it comes to disease,theresults of both companies showed howthescience of genetics, particularly attheconsumer level, is still a moving target.

Its All AbouttheData

After claiming I had a 48% greater risk thanthegeneral population of developing type 2 diabetes, both 23Mofang and 23andMethen revisedtheresults.

First, 23andMe cuttherisk figure from its analysis, posted in an online portal I accessed with a password.Theoverview analysis that I have an increased likelihood of developingthedisease never changed. But a few months later,thefigure was back, with a slightly different explanation: Based on data from 23andMe research participants, people of European descent with genetics like yourshave an estimated 48% chance of developing type 2 diabetes at some point between your current age and 80.

Shirley Wu, 23andMes director of health product, saidthecompany occasionally updates its analysis. My risk figure might have changed if I indicated my ethnicity and age, she said. I hadnt given any biographical details or filled out any surveys on 23andMes site.

Your risk estimates will likely change over time as science gets better and as we have more data, Wu said. We are layering in different non-genetic risk factors, and that potentially updates our estimates.

Algorithms and data underpintheanalysis of both companies, asthey do for other genetic testing firms, so it apparently isnt unusual forDNAanalysis to shift as more research and data into diseases becomeavailable. Still, I was confused.

I reached out to Topol, who said that 23andMes diabetes finding likely didnt apply to me sincethevast majority of people studied forthedisease are of European descent. Wu saidthe American company does have a predominantly European database but has increased efforts to gather data for other ethnicities as well.

23Mofang, meanwhile, also revised my diabetes risk to 26%. My genes hadnt changed, so why hadtheresults? CEO Zhou saidthecompany is constantly updating its research and datasets, and that may changetheanalysis. As time goes by,there will be fewer corrections and greater accuracy, he said.

For now, theres a possibility you can later get a result thats opposite oftheinitial analysis, said Zhou.

Additionally,theaccuracy of genetic analysis varies hugelydepending onthetraits and conditions tested because some are less genetically linkedthan others.

Zhou isnt deterred by criticism. He said 23Mofang employs big data and artificial intelligence to findthecorrelations to diseases without relying on scientists to figure it out.

While its impossible to get things 100% right,thecompanys accuracy will get better with more data, he said.

Ancestry Mystery

You might assume thatthetwo companies would offer similar analysis of my ancestry, which Ive long thought to be three-fourths Vietnamese and one-fourth Chinese (my paternal grandfather migrated from China as a young man). Born in Vietnam and raised intheUS, I now live in Hong Kong, a special administrative region of China.

23andMes analysis mirrored what I knew, but my ancestry according to 23Mofang? 63% Han Chinese, 22% Dai an ethnic group in southwestern China and 3% Uyghur. (It didnt pick up my Vietnam ancestry becausetheanalysis only compares my genetics to those of other Chinese, according tothecompany.)

That led me tothebig question in this grand experiment: How safe is my data afterthesetests?

Human Rights Watch said in 2017 that Chinese authorities collectedDNAsamples from millions of people in Xinjiang,thepredominately Muslim region thats home totheUyghur ethnic group. Chinas use of mass detention and surveillance intheregion has drawn international condemnation. What if Beijing compelled companies to relinquishdata on all clients with Uyghur ancestry? Couldthedetails of my Uyghur heritage fall into government hands and put me at risk of discrimination or extra scrutiny on visits to China?

23Mofangs response tothese questions didnt give me much solace. Regulations enacted in July gavethegovernment access to data held by genetics companies for national security, public health and social interest reasons.Thecompany respectsthelaw, said Zhou. Ifthelaw permitsthegovernments access tothedata, we will give it, he said.

Theauthorities havent made any requests for customer data yet, Zhou pointed out. Chinas State Council, which issuedtheregulations, andtheMinistry of Science & Technology didnt respond to requests for comment.

Over intheUS, 23andMe said it never shares customer data with law enforcement unlesstheres a legally valid requestsuch as a search warrant or written court order.Thecompany said its had seven government requests for data on 10 individual accounts since 2015 and has not turned over any individual customer data. It uses all legal measures to challenge such requests to protect customers privacy, said spokeswoman Christine Pai.

No Protection

New York Universitybioethics professorArt Caplansays privacy protections on genetic information are poor in most countries, including in the USand China.

I dont think anyone can say theyre going to protect you, he said. In China, its even easier for the government. The government retains the right to look.

23andMe appeals to potential customers with the lure of being able to make more informed decisions about your health, but after taking tests on both sides of the Pacific and realizing how malleable the data can be, as well as the myriad factors that determine diseases and conditions, I am left more skeptical than enlightened.

I gave away something more valuable than a vial of spit the keys to my identity. It could become a powerful tool in understanding disease and developing new medicines, but in the end its entrepreneurs like Zhou who will ultimately decide what to do with my genetic data. He plans to eventually look for commercial uses, like working with pharmaceutical companies to develop medicines for specific diseases.

We want to leverage the big database we are putting together on Chinese people, Zhou said. But first, we need to figure out how to do it ethically.

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How do consumer DNA tests from the US and China stack up? - Abacus

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Longevity Linked to Proteins That Calm Overexcited Neurons – Quanta Magazine

Saturday, November 30th, 2019

A thousand seemingly insignificant things change as an organism ages. Beyond the obvious signs like graying hair and memory problems are myriad shifts both subtler andmore consequential: Metabolic processes run less smoothly; neurons respond less swiftly; the replication of DNA grows faultier.

But while bodies mayseem to just gradually wear out, many researchers believe instead that aging is controlled at the cellular and biochemical level. They find evidence for this in the throngof biological mechanisms that are linked to aging but also conserved across species as distantly related as roundworms and humans. Whole subfields of research have grown up around biologists attempts to understand the relationships among the core genes involved in aging, which seem to connect highly disparate biological functions, like metabolism and perception. If scientists can pinpoint which of the changes in these processes induce aging, rather than result from it, it may be possible to intervene and extend the human life span.

So far, research has suggested that severely limiting calorie intake can have a beneficial effect, as can manipulating certain genes in laboratory animals. But recently in Nature, Bruce Yankner, a professor of genetics and neurology at Harvard Medical School, and his colleagues reported on a previously overlooked controller of life span: the activity level of neurons in the brain. In a series of experiments on roundworms, mice and human brain tissue, they found that a protein called REST, which controls the expression of many genes related to neural firing, also controls life span. They also showed that boosting the levels of the equivalent of REST in worms lengthens their lives by making their neurons fire more quietly and with more control. How exactly overexcitation of neurons might shorten life span remains to be seen, but the effect is real and its discovery suggests new avenues for understanding the aging process.

In the early days of the molecular study of aging, many people were skeptical that it was even worth looking into. Cynthia Kenyon, a pioneering researcher in this area at the University of California, San Francisco, has described attitudes in the late 1980s: The ageing field at the time was considered a backwater by many molecular biologists, and the students were not interested, or were even repelled by the idea. Many of my faculty colleagues felt the same way. One told me that I would fall off the edge of the Earth if I studied ageing.

That was because many scientists thought that aging (more specifically, growing old) must be a fairly boring, passive process at the molecular level nothing more than the natural result of things wearing out. Evolutionary biologists argued that aging could not be regulated by any complex or evolved mechanism because it occurs after the age of reproduction, when natural selection no longer has a chance to act. However, Kenyon and a handful of colleagues thought that if the processes involved in aging were connected to processes that acted earlier in an organisms lifetime, the real story might be more interesting than people realized. Through careful, often poorly funded work on Caenorhabditis elegans, the laboratory roundworm, they laid the groundwork for what is now a bustling field.

A key early finding was that the inactivation of a gene called daf-2 was fundamental to extending the life span of the worms. daf-2 mutants were the most amazing things I had ever seen. They were active and healthy and they lived more than twice as long as normal, Kenyon wrote in a reflection on these experiments. It seemed magical but also a little creepy: they should have been dead, but there they were, moving around.

This gene and a second one called daf-16 are both involved in producing these effects in worms. And as scientists came to understand the genes activities, it became increasingly clear that aging is not separate from the processes that control an organisms development before the age of sexual maturity; it makes use of the same biochemical machinery. These genes are important in early life, helping the worms to resist stressful conditions during their youth. As the worms age, modulation of daf-2 and daf-16 then influences their health and longevity.

These startling results helped draw attention to the field, and over the next two decades many other discoveries illuminated a mysterious network of signal transduction pathways where one protein binds another protein, which activates another, which switches off another and so on that, if disturbed, can fundamentally alter life span. By 1997, researchers had discovered that in worms daf-2 is part of a family of receptors that send signals triggered by insulin, the hormone that controls blood sugar, and the structurally similar hormone IGF-1, insulin-like growth factor 1; daf-16 was farther down that same chain. Tracing the equivalent pathway in mammals, scientists found that it led to a protein called FoxO, which binds to the DNA in the nucleus, turning a shadowy army of genes on and off.

That it all comes down to the regulation of genes is perhaps not surprising, but it suggests that the processes that control aging and life span are vastly complex, acting on many systems at once in ways that may be hard to pick apart. But sometimes, its possible to shine a little light on whats happening, as in the Yankner groups new paper.

Figuring out which genes are turned on and off in aging brains has long been one of Yankners interests. About 15 years ago, in a paper published in Nature, he and his colleagues looked at gene expression data from donated human brains to see how it changes over a lifetime. Some years later, they realized that many of the changes theyd seen were caused by a protein called REST. REST, which turns genes off, was mainly known for its role in the development of the fetal brain: It represses neuronal genes until the young brain is ready for them to be expressed.

But thats not the only time its active. We discovered in 2014 that [the REST gene] is actually reactivated in the aging brain, Yankner said.

To understand how the REST protein does its job, imagine that the network of neurons in the brain is engaged in something like the party game Telephone. Each neuron is covered with proteins and molecular channels that enable it to fire and pass messages. When one neuron fires, it releases a flood of neurotransmitters that excite or inhibit the firing of the next neuron down the line. REST inhibits the production of some of the proteins and channels involved in this process, reining in the excitation.

In their new study, Yankner and his colleagues report that the brains of long-lived humans have unusually low levels of proteins involved in excitation, at least in comparison with the brains of people who died much younger. This finding suggests that the exceptionally old people probably had less neural firing. To investigate this association in more detail, Yankners team turned to C. elegans. They compared neural activity in the splendidly long-lived daf-2 mutants with that of normal worms and saw that firing levels in the daf-2 animals were indeed very different.

They were almost silent. They had very low neural activity compared to normal worms, Yankner said, noting that neural activity usually increases with age in worms. This was very interesting, and sort of parallels the gene expression pattern we saw in the extremely old humans.

When the researchers gave normal roundworms drugs that suppressed excitation, it extended their life spans. Genetic manipulation that suppressed inhibition the process that keeps neurons from firing did the reverse. Several other experiments using different methods confirmed their results. The firing itself was somehow controlling life span and in this case, less firing meant more longevity.

Because REST was plentiful in the brains of long-lived people, the researchers wondered if lab animals without REST would have more neural firing and shorter lives. Sure enough, they found that the brains of elderly mice in which the Rest gene had been knocked out were a mess of overexcited neurons, with a tendency toward bursts of activity resembling seizures. Worms with boosted levels of their version of REST (proteins named SPR-3 and SPR-4) had more controlled neural activity and lived longer. But daf-2 mutant worms deprived of REST were stripped of their longevity.

It suggests that there is a conserved mechanism from worms to [humans], Yankner said. You have this master transcription factor that keeps the brain at what we call a homeostatic or equilibrium level it doesnt let it get too excitable and that prolongs life span. When that gets out of whack, its deleterious physiologically.

Whats more, Yankner and his colleagues found that in worms the life extension effect depended on a very familiar bit of DNA: daf-16. This meant that RESTs trail had led the researchers back to that highly important aging pathway, as well as the insulin/IGF-1 system. That really puts the REST transcription factor somehow squarely into this insulin signaling cascade, said Thomas Flatt, an evolutionary biologist at the University of Fribourg who studies aging and the immune system. REST appears to be yet another way of feeding the basic molecular activities of the body into the metabolic pathway.

Neural activity has been implicated in life span before, notes Joy Alcedo, a molecular geneticist at Wayne State University who studies the connections between sensory neurons, aging and developmental processes. Previous studies have found that manipulating the activity of even single neurons in C. elegans can extend or shorten life span. Its not yet clear why, but one possibility is that the way the worms respond biochemically to their environment may somehow trip a switch in their hormonal signaling that affects how long they live.

The new study, however, suggests something broader: that overactivity in general is unhealthy. Neuronal overactivity may not feel like anything in particular from the viewpoint of the worm, mouse or human, unless it gets bad enough to provoke seizures. But perhaps over time it may damage neurons.

The new work also ties into the idea that aging may fundamentally involve a loss of biological stability, Flatt said. A lot of things in aging and life span somehow have to do with homeostasis. Things are being maintained in a proper balance, if you will. Theres a growing consensus in aging research that what we perceive as the body slowing down may in fact be a failure to preserve various equilibria. Flatt has found that aging flies show higher levels of immune-related molecules, and that this rise contributes to their deaths. Keeping the levels in check, closer to what they might have been when the flies were younger, extends their lives.

The results may help explain the observation that some drugs used for epilepsy extend life span in lab animals, said Nektarios Tavernarakis, a molecular biologist at the University of Crete who wrote a commentary that accompanied Yankners recent paper. If overexcitation shortens life span, then medicines that systematically reduce excitation could have the opposite effect. This new study provides a mechanism, he said.

In 2014, Yankners laboratory also reported that patients with neurodegenerative diseases like Alzheimers have lower levels of REST. The early stages of Alzheimers, Yankner notes, involve an increase in neural firing in the hippocampus, a part of the brain that deals with memory. He and his colleagues wonder whether the lack of REST contributes to the development of these diseases; they are now searching for potential drugs that boost REST levels to test in lab organisms and eventually patients.

In the meantime, however, its not clear that people can do anything to put the new findings about REST to work in extending their longevity. According to Yankner, REST levels in the brain havent been tied to any particular moods or states of intellectual activity. It would be a misconception, he explained by email, to correlate amount of thinking with life span. And while he notes that there is evidence that meditation and yoga can have a variety of beneficial effects for mental and physical health, no studies show that they have any bearing on REST levels.

Why exactly do overexcited neurons lead to death? Thats still a mystery. The answer probably lies somewhere downstream of the DAF-16 protein and FoxO, in the genes they turn on and off. They may be increasing the organisms ability to deal with stress, reworking its energy production to be more efficient, shifting its metabolism into another gear, or performing any number of other changes that together add up a sturdier and longer-lived organism. It is intriguing that something as transient as the activity state of a neural circuit could have such a major physiological influence on something as protean as life span, Yankner said.

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The biological defects that come with age and how to prevent them – Ladders

Saturday, November 30th, 2019

I mightve died fearing the ageing process about as much as everyone else. Unfortunately, about two drags into my fourth cigarette a friend of mine relayed an anecdote about his dying grandfatherunprompted.

So its his ninety-eighth birthday and were watching him try to blow out candles on a cake he probably cant eat anywayfor like an hour.Eventually, I get bored and blow it out for him before asking what he wished for. To which he says: I accidentally peeped the expiration date on the carton of milk in the fridge and it dawned on me that I didnt know which one of us had more time left.

In an instant, I quit smoking and took up gerascophobia. In defense of the soon-to-be-dead-party-pooper, the older we get the louder minute hands become. We try to dull the racket by route of cosmetics, pop culture, copulation and fairy-tales; all to distract ourselves from the inevitable frog march into nothingness. If were honest, every year after 50 extends a catalog of things we cant do anymore. The list begins innocuously enough with things like fit into my favorite pair of whatevers or comprehend the cultural significance of this or that, but then the whole thing ends tragically nuanced.

Were all familiar with the odd way time seems to speed up every year after 21? It makes sense that time adopts the illusion of expedience as we run out of milestones but the reasoning behind this phenomenon is actually even less abstract than that. According to a new paper published in the scientific journalEuropean Review, as wrinkles begin to appear, and our postures sag, our neurons grow larger, increasing the amount of time it takes us to process an image.

People are often amazed at how much they remember from days that seemed to last forever in their youth, explained the new studys author Adrian Bejan, the J.A. Jones Professor of Mechanical Engineering at Duke University in a pressrelease.Its not that their experiences were much deeper or more meaningful, its just that they were being processed in rapid-fire.

Interestingly enough, almost all of the psychological conditions that narrate our morph into maggot food are effected by well-documented physiological precursors.

Little mutations join forces to pen an aggressive eviction notice apostrophized by medical abnormalities that condemn life on planet earth to be less and less pleasant.This is especially relevant right now because Americas global age is increasing at an exponential rate.

When a society attains economic and agricultural excellence the death rate decreases alongside birthrate, which leads to a larger and older population.James Fries, professor of medicine at Stanford University, indexed the sociological fine-print that punctures this developmental achievement back in 1998. What Fries calls the compression of morbidity dictates that denizens of a thriving nation enjoy healthy lives for most of it until a series of health setbacks plague them all at once toward the final stretch. This is often in the form of chronic illness that appears in tandem with natural biological regressions. As far as the perversion of our mind clocks are concerned, organic changes in saccades frequency, body size, and pathway degradation have been studied to be the primary culprits. This is what physics more discreetly refers to asthe constructional law of low architecture. Elderly people simply receive fewer images in the same amount of time as younger people, drastically decelerating their integration of information. The mechanisms that animate this process are fairly identical to a cameras shutter speed.

The human mind senses time changing when the perceived images change, Bejan adds. The present is different from the past because the mental viewing has changed, not because somebodys clock rings. Daysseemed to last longerin your youth because the young mind receives more images during one day than the same mind in old age.

Overall somatic decline is ensured by similar physiological defects. New data published by researchers at Yale University revealed that our ability to obtain energy by burning belly fat also reduces as we grow older. This impairment is a direct cost of medical and agricultural preferments that have allowed us to defy our intended life expectancy.

Several mechanisms in the body are not selected for longevity,explained the papers lead researcher, Vishwa Deep Dixit. Normally the B cells produce antibodies and defend against infection. But with aging, the increased adipose B cells become dysfunctional, contributing to metabolic disease. This predisposes an animal to diabetes and metabolic dysfunction like inability toburn fat.

Thankfully, successful aging is no longer a consideration beholden to science fiction. Genetics may draft the treatment, but our lifestyle choices govern how gracefully we interpret the consequential beats. Presbycusis for instance (gradual degeneration of the cochlea consequenced by bilateral symmetrical aging) is by all accounts unavoidable. It is the leading cause of hearing loss and affects just about one and two individuals over the age of 75. However, there are cumulative environmental predictors that can worsen the condition and even accelerate its development. Prolonged exposure to headphone frequencies causes the hair cells in the cochlea to bend beyond the point of repair. Uniformly, we all have a reserve capacity of cells, each of which dies without fanfare throughout a given day.

Of course, as we age, this process, which is calledapoptosis, picks up momentum. What you might not know though is our state of mind mandates how quickly and violently this program transpires.

Having a good attitude is very important. We know that stress plays a key role in how we will age. We have these hormones, these stress hormones, that actually play a role in how our cells will die. When we become under stress we have an accelerated loss of cells. So this over a lifetime plays a major role in how functional we will be, explainedSteven Gambert, MD.

Even more consistently than this is the role our diet plays in the pace of our weathering. Diets like the Mediterranean, a regimen rich in vegetables and olive oil, low in meat ingestion, and moderate in alcohol consumption, slackens the agents of aging by checking their pawns, namely chronic maladies associated with old age. A recent study conducted on 23,349 men and women confirmed what previous literature had intimated in years prior. Medical journalist, Caroline Wilbert reports:

During the study period, there were 652 deaths among 12,694 participants who had lower Mediterranean diet scores of 0-4 and 423 deaths among the 10,655 participants who had higher scores of at least 5. In general, those with higher scores were more likely to still be alive at the end of the study.

Similarly, earlier this year a team of European researchers disclosed that routine coffee consumption contributes to DNA integrity and overall longevity. This is earned by the antioxidants residing in dark roasted beans, a compound that helps cells repair themselves more effectively in the wake of the damage done by free radicals. Free radicals, birthed by sunlight, oxygen, and pollution, deteriorate the collagen fibers in the skin. The microbial properties in coffee help staff off these very same germs. Its caffeine acid boosts collagen levels which in turn brakes the aging process.

When it comes to confronting the aspects of aging that we cannot outwit, its important to distinguish a superficial fear of growing old, alternatively phrased as literal molecule deterioration, from a philosophical fear of death; the metaphysical cessation of being. Though Im not deaf to the terror of either, the attenuating of the former cant really refute the latter in and of itself. In other words, extending life for its own sake wont do you any good without some kind of moral equipment to boot. However you go about securing this is valid enough so long as it doesnt infringe on the fundamental rights of others. Rabelais lived for ambiguity, Plath was vitalized by the unreal and dangerous, Van Gogh was energized by lifes series of small things, Hitchens lived for irony (and died for it too), and Camus made a point not to think about any of it too intensely.

Chronological age is the most literal translation of our time here, our biological age is the most honest projection of how much of it weve got left, and our reservoir of purpose judges how successfully we spent it. Ultimately, appealing to your temple and the candles that emblazon it, is a good way to neuter the urge to cry over expired milk, whether the curtain falls when youre 25 or 98.

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How to live longer: This type of exercise found to be best for increasing life expectancy – Express

Tuesday, November 26th, 2019

Studies have found that a long lifespan may be linked to a number of factors with genetics being one of the main ones. One study from the Albert Einstein College of Medicine looked at 500 individuals who had lived to 95 or older and identified common genotypes, rather than lifestyle variables, that caused them to outlive others. For those who dont have the best genetics, fear not, studies have proven that doing this type of exercise could help.

Researchers have identified certain behaviours that can increase longevity.

Diet is of course strongly linked to longevity and it has been advised to follow a Mediterranean diet which includes plenty of fruits, vegetables, whole grains, nuts and healthy fats.

When it comes to food, the ones to avoid include processed snacks, fried foods and sugar-sweetened beverages.

Exercise can also play a big role in life longevity, in particular a certain type.

READ MORE: How to live longer: Best diet to boost life expectancy - three foods to eat

Strength in the muscles and body has also been aligned with living longer.

A study of more than a million Swedish teenage boys supports concluded that "low muscular strength in adolescents is an emerging risk factor for major causes of death in young adulthood.

Those who scored about average during initial muscular strength tests were at a 20-35 percent lower risk of early death from any cause, including cardiovascular disease.

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Exercise regularly

Working out is highly beneficial not only for physical health but for mental health too.

Exercise boosts everything from cardiovascular fitness to mood and energy so its no surprise it can also extend ones life.

Federal physical activity guidelines recommend aiming for at least 150 minutes of moderate or 75 minutes of vigorous aerobic activity each week, plus twice-weekly muscle-strengthening sessions.

Benefits of team sports

Opting for a more vigorous workout, leading health experts recommend partaking in more team sports such as tennis and football.

Its believed that team sports help boost longevity as they encourage social interaction as well as exercise.

A study published in Mayo Clinic Proceedings found that the social interaction one gets from working out with someone else such as participating in team sports can actually be more beneficial than working out alone, adding years to ones life.

Study co-author, Dr James OKeefe, a cardiologist at Saint Lukes Mid America Heart Institute said: If youre interested in exercising for health and longevity and well-being, perhaps the most important feature of your exercise regimen is that it should involve a playdate.

Professor of psychology and logopedics at the University of Helsinki, Finland added: It would be important to maintain existing relationships by meeting family members or friends face-to-face and exercising together.

If your social network isnt where you want it to be, consider looking for recreational sport leagues you can join or group fitness classes where you might meet some new, friendly faces.

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Liberty Science Centers Inaugural Genius of New Jersey to Honor Innovators Who Make the State a World Leader in Cutting-Edge Applied Science – Yahoo…

Tuesday, November 26th, 2019

JERSEY CITY, N.J.--(BUSINESS WIRE)--

Ceremony to host Bonnie Bassler, molecular biologist and microbe fighter; Robert J. Hariri, stem cell and human longevity expert; and David Rosenberg, world leader in urban vertical farming

Plus a special honoree from California whom LSC is feting because hes a tech badass: AI giant Sebastian Thrun, the godfather of the self-driving car

New Jersey is home to some of the worlds most accomplished innovators in applied science. Three of them who are pioneering research and solutions in antibacterial therapies, genetics, human life extension, and food production are being honored by Liberty Science Center at its inaugural The Genius of NJ celebration on Monday, December 2.

The celebration starts at 5:30 pm with cocktails and unique technology demonstrations: a full-body 3D scanner from Lenscloud that can scan a person in half a second with 120 cameras and create a realistic 3D avatar; bomb-disposing robots and an autonomous fighting robot from Picatinny Arsenal; and Flyer, a personal aerial vehicle from Kitty Hawk, headquartered in Mountain View, CA.

The New Jersey honorees are Bonnie Bassler, Chair of Molecular Biology at Princeton University, who is developing novel antimicrobial therapies to render pathogenic bacteria harmless; Dr. Robert J. Hariri, Chairman, Founder & CEO of Celularity, Inc. who is pioneering the use of stem cells to cure disease and slow aging; and David Rosenberg, CEO and Co-Founder of AeroFarms, the worlds leader in mass-scale vertical indoor farming.

Our inaugural Genius of NJ Award Winners represent the best this state and the world have to offer in harnessing science for the betterment of humanity, said Liberty Science Center President and CEO Paul Hoffman. Each is using his or her exceptional intellect and creative abilities to disrupt and innovate both in their respective fields and in their commitment to making the world healthier and safer.

Bonnie Bassler is the Squibb Professor of Molecular Biology and Chair of the Department of Molecular Biology at Princeton University, as well as a Howard Hughes Medical Institute Investigator. Professor Bassler deciphered the chemical language bacteria cells use to communicate by studying a harmless marine bacterium called Vibrio fischeri, known to bioluminesce, or make light, like fireflies do. She is a winner of the MacArthur Genius Grant and is now developing therapies that disrupt communication among harmful bacteria and strengthen communication among helpful bacteria. At a time when an increasing number of bacteria are resistant to traditional kinds of antibiotics, Dr. Bassler offers a promising new approach to antimicrobial therapy.

The Chairman, Founder and CEO of Celularity, Inc., in Warren, NJ, and Co-Founder and Vice Chairman of Human Longevity, Inc., Dr. Robert Hariri is the quintessential renaissance man. Hes a neurosurgeon, a medical researcher, and a serial entrepreneur in two technology sectors: aerospace and biomedicine. Dr. Hariri has advised the Vatican on genetics, and in 2018, Pope Francis bestowed on him the Pontifical Key Award for Innovation. Dr. Hariris path to discovering that the placenta, a temporary organ discarded after birth, was a potent source of stem cells began in the 80s when he viewed a first trimester ultrasound of his oldest daughter and wondered why the placenta was so large. Today Dr. Hariri is working to use placental stem cells to cure disease, slow aging, and augment healthy human lifespan.

Prominent entrepreneur David Rosenberg, CEO and Co-Founder of AeroFarms, set out to reinvent one of the most basic aspects of food production, farming. AeroFarms has grown 800 species of plants indoors and can grow them 365 days a year without sun or soil, achieving yields 130 times greater than conventional farming. His system uses 95 percent less water than field farming and no pesticides, herbicides, or fungicides. Rosenbergs adoption of cutting-edge technology has been a cornerstone of AeroFarms, which set up its first indoor vertical farms in abandoned warehouses in Newark. He employs plant biologists, microbiologists, geneticists, systems engineers, and data scientists. AeroFarms innovations in indoor vertical farming have improved not just plant yields but also taste, texture, nutritional density, and shelf life.

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Additionally, LSC will honor non-New Jersian Sebastian Thrun, CEO of Kitty Hawk, a company spun off from a Google moonshot effort to free the world from traffic. Kitty Hawk is developing all-electric, vertical take-off flying machines for everyday use. Known as the godfather of self-driving cars, as a Stanford professor in 2005, Thrun led a team that won the $2-million Defense Department Grand Challenge to build an autonomous vehicle which drove itself unassisted on a 132-mile course across the Mojave Desert. His winning entry, Stanley, is now on display at the Smithsonian in Washington, DC. While at Stanford, in 2011 he and colleague Peter Norvig offered their Introduction to Artificial Intelligence course online to anyone, for free. Over 160,000 students in more than 190 countries enrolled! The MOOC (which stands for Massive Open Online Course) was born, and Thrun founded the online education company Udacity, with the goal of democratizing education. Thrun relinquished his tenured Stanford professorship to join Google and founded the companys semi-secret R&D division called Google X (now called simply X) to develop breakthrough technologies, such as self-driving cars, that make the world a radically better place.

Ticket prices for The Genius of NJ start at $750 per guest with options for table sponsorship from $12,500 to $50,000. For more details, please visit The Genius of NJ online. All proceeds from this event will support LSCs mission to inspire the next generation of scientists and engineers.

About Liberty Science Center

Liberty Science Center (LSC.org) is a 300,000-square-foot nonprofit learning center located in Liberty State Park on the Jersey City bank of the Hudson near the Statue of Liberty. Dedicated to inspiring the next generation of scientists and engineers and bringing the power, promise, and pure fun of science and technology to learners of all ages, Liberty Science Center houses the largest planetarium in the Western Hemisphere, 12 museum exhibition halls, a live animal collection with 110 species, giant aquariums, a 3D theater, live simulcast surgeries, a tornado-force wind simulator, K-12 classrooms and labs, and teacher-development programs. More than 250,000 students visit the Science Center each year, and tens of thousands more participate in the Centers off-site and online programs. Welcoming more than 750,000 visitors annually, LSC is the largest interactive science center in the NYC-NJ metropolitan area.

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The Secret To Longevity Could Be Genetics – Medical Daily

Sunday, November 24th, 2019

Japan has the worlds oldest population, with 28 percent of all citizens comprising of elderly people above the age of 65. The secret to longevity lies not only in their healthy diet and lifestyle choices, but is influenced by a specific set of genes. Yes, the reason the country has 146 people over the age of 110 (referredto as supercentenarians) is simply good genes. This factor enabled them to stave off cancer and other deadly diseases for more than a century.

A new study conducted by the RIKEN Center for Integrative Medical Science (IMS) and Keio University School of Medicine in Japan sought to understand the genetics behind aging in supercentenarians by analyzing single-cell RNA sequencing.In the paperthat was published in the journal Proceedings of the National Academy of Sciences, the scientists investigated the immune cells of seven supercentenarians and made comparisons to the five subjects with ages between 50 and 80 years.

Researchers looked at 41,208 cells altogether from the elders with ages over 110, and 19,994 cells in the control group. The two cells part of the bodys immune response, which are B-cells and T-cells, were studied.It was found that B-cells had a lower count in the supercentenarians, while T-cells were at the same number in both groups.

However, the major finding was that supercentenarians had more of a particular subset of T-cells, namely CD4 T-cells that are capable of killing harmful cells, which wasonly possible by cytotoxic CD8 T-cells until then. In fact, 80 percent of the T-cells were composed of CD4 markers, whereas 10 to 20 percent of the T-cells had the marker in people of ages between 50 and 80.

The secret to aging may lie in your genes. Photo courtesy of Pexels

Since T-cells with CD8 markers are known to be cytotoxic, this means the CD4 markershad changed to acquire the new function, as per the researchers. This was not the case with the relatively younger subjects, this was the single most unique genetic characteristic of supercentenarians.

"This research shows how single-cell transcription analysis can help us to understand how individuals are more or less susceptible to diseases. CD4-positive cells generally work by generating cytokines, while CD8-positive cells are cytotoxic, and it may be that the combination of these two features allows these individuals to be especially healthy," Piero Carninci, IMS Deputy Director, said.

To understand the unusual phenomenon better, the researchers further studied the cells of two older participants, only to find another interesting fact about the CD4 T-cells: They had descended and multiplied from a single ancestral cell.

"We believe that this type of cells, which are relatively uncommon in most individuals, even young, are useful for fighting against established tumors, and could be important for immunosurveillance. This is exciting as it has given us new insights into how people who live very long lives are able to protect themselves from conditions such as infections and cancer," Carninci added.

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Leveraging AI To Accelerate Precision Health For Longevity – Forbes

Sunday, November 24th, 2019

Aging Analytics Agency

Co-authoring this article with me is my colleague Dmitry Kaminskiy, at Deep Knowledge Group.

People over 50 are the fastest growing demographic group worldwide. This creates both opportunities and challenges for the global economy and healthcare systems. The Longevity Industry, which provides products and services for those aged over 50 is becoming a multi-trillion-dollar industry. There are currently 260 companies, 250 investors, 10 non-profits, and 10 research labs in the Longevity Industry in the UK alone. In the next decade, Longevity policies enacted by governments, and changes in the financial industry will transform society. Achieving small but practical results in Longevity distributed at scale will have enormous and multiplicative effects on society. Extending the functional lifespan of humans by just one year will decrease suffering for tens of millions of people and will improve the quality of life for billions of people.

Despite having more potential to increase healthy Longevity in the short term than any other sector, AI for Longevity is an underrepresented sector in the Longevity Industry. AI holds enormous potential to rapidly accelerate the implementation of longevity research and development. To address this, Ageing Research at King's (ARK) in collaboration with the Biogerontology Research Foundation, Deep Knowledge Ventures (at which Dmitry and I are Managing Partners), along with others has established the Longevity AI Consortium at Kings College London. The Consortium will use King's world-leading advances in genetics, AI and ageing research to develop advanced personalized consumer and patient care. The Consortium will help accelerate advances in Longevity using a unique academic-industry focus on preventive and personalized physical, mental and financial health. The establishment of the AI Longevity Consortium and AI Longevity Accelerator at Kings College has the potential to help make the UK the worlds leading AI for Longevity Hub and creates an opportunity for huge advances in Longevity research which will benefit people all around the world.

Over the next few years, the Longevity AI Consortium plans to expand to include centers in Switzerland, Israel, Singapore and the US. This collaborative effort involves sophisticated methods for translating advanced AI for Longevity solutions, along with the development of advanced frameworks and technologies including novel applications of life data for insurance companies, pension funds, healthcare companies, and government bodies. These new technologies and instruments at the forefront of the rising Longevity Financial Industry provide practical applications of preventive medicine and precision health.

Sophisticated Analytical Frameworks for Precision Medicine and Longevity Diagnostics, Prognostics ... [+] and Therapeutic Benchmarking.

The Longevity AI Consortium will serve as a leading R&D hub and industry-academic hotspot for advanced AI-driven personalized preventive diagnostics, prognostics and therapeutics. This represents a paradigm shift from treatment to prevention and a new frontier - from precision medicine to precision health, enabling the UK to become the leading global hub for the application of AI to Longevity and Precision Health. The Longevity AI Consortium plans to dedicate resources to R&D in other niches where the science is ahead of the funding: e.g. microbiome diagnostics and therapeutics, recent advancements and innovations in advanced cosmetics in particular. The Consortium aims to identify novel longevity and healthy ageing biomarkers, accelerate diagnosis of age-related health decline, develop personalised physical, mental and financial health to better implement and promote effective healthy lifestyles for longevity, such as modifying patterns in sleep, nutrition, physical activity, environmental exposure and financial planning.

The Longevity AI Consortium will use sophisticated and multidimensional analytical frameworks developed by Aging Analytics Agency to perform industry benchmarking in precision health and personalized preventive medicine clinics in order to construct the ideal diagnostic, prognostic and therapeutic pipeline using the most advanced market-ready methods and technologies. The Consortium will develop a comprehensive cloud computing platform to enable the development of minimum viable and most comprehensive panels of biomarkers of aging, creating an ecosystem that incentivizes the participation of doctors, clinics, data providers, AI companies and corporate partners, and which enables efficient and streamlined commercialization and clinical implementation of both validated and experimental biomarkers of ageing as a framework for the extension of national Healthy Longevity in the UK.

This mind map provides an overview of the Longevity Industry UK Landscape including 260 companies, ... [+] 250 investors, 10 non-profits, and 10 research labs. (Image source Aging Analytics Agency).

Kings College London is the logical choice of location for the first Longevity AI Consortium, due to their unique combination of resources, departments and technologies for both AI and Longevity. Kings is also an ideal location for the AI Consortium because it has dedicated divisions and resources both for AI and for Longevity. Furthermore, being located in London, it is in an ideal physical location to engage in cross-sector and industry-academic collaboration. The AI Longevity Consortium is currently designing a complementary AI Consortium for Financial Wellness which will utilize financial and behavioural data to develop products and services to enable UK citizens to maintain financial stability, social activity and psychological well-being across extended periods of Healthy Longevity.

Currently there are only three centers in the world actively working to apply AI to precision health for healthy Longevity. These include the US based Buck Institute for Research on Aging, US based Y Combinator, and the US based AI Precision Health Institute (AI-PHI) at the University of Hawaii Cancer Center. Only the AI-PHI has actually succeeded in practice. Now that the Longevity AI Consortium has been established at Kings College London, the UK can immediately leverage its existing resources, including its very well-developed AI industry and its reputation for extremely strong industry, academic, and governmental cooperative initiatives, to become the number one global hub for the application of AI to Longevity and Precision Health.

There are currently four major AI Centres for Healthcare in major industry, academic and metropolitan hubs in the UK, but none of them have a specific focus on Longevity, precision health and preventive medicine. While these centres serve as a precedent and proof-of-concept for the viability of an AI Centre for Longevity, they do not adequately address the need for a leading AI for Longevity R&D nexus within the UK capable of developing leading solutions, products and services that leverage the power of AI to implement practical, real-world product, services and solutions to extend citizens Healthy Longevity.

Sophisticated Analytical Frameworks for Precision Medicine and Longevity Diagnostics, Prognostics ... [+] and Therapeutic Benchmarking

2020 and Beyond

In 2020, following the completion of several key development milestones, the Longevity AI Consortium plans to launch an AI Longevity Accelerator Program that will serve as a much-needed bridge between startups focusing on AI for Longevity research and drug development and major UK investors. While the UKs AI and Longevity industry ecosystems are very developed individually, the number of longevity startups utilizing AI in a major way for their internal R&D is comparatively small. The potential impact presented by the synergy of these two sectors is huge. The UK government has heavily prioritized the separate sectors of AI and Longevity, including both sectors in the top 4 Industrial Strategy Grand Challenges. However, by uniting the AI and Longevity verticals in unique and convergent ways the UK could leverage the nations strengths in these industries to their maximum potential.

AI Longevity Accelerator at Kings College aims to develop an infrastructure to promote increased investments and developments in the AI for Longevity sector to provide AI for Longevity startups with relevant levels of funding. Startups selected for inclusion in the accelerator will also receive mentorship and incubation resources, and will gain access to a global network of experts in the areas of scientific R&D, business development and investment relations. The AI Accelerator will also provide startups with the tools necessary to grow, expand and evolve following their time in the Accelerator, and will equip them with the skills required to develop further through later-stage venture capital and government grants. Longevity companies that prove capable of achieving tangible results may become the next Googles, and investment firms that invest in those companies may become the SoftBanks and Vision Funds of tomorrow. AI holds enormous potential to rapidly accelerate the implementation of Longevity research and development. The establishment of the AI Longevity Consortium and AI Longevity Accelerator at Kings College has the potential to make the UK the worlds leading AI for Longevity Hub and creates an opportunity for huge advances in Longevity research which will benefit billions of people all around the world.

Click the box below for more information on the Longevity AI Consortium.

Click the box below for information on the AI Longevity Accelerator.

Click the box below for in-depth information about the Global Longevity Industry and explore a book that Dmitry and I co-authored: Longevity Industry 1.0 - Defining the Biggest and Most Complex Industry in Human History.

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Leveraging AI To Accelerate Precision Health For Longevity - Forbes

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Feliciano Lopez planning to have children with wife in the future – Tennis World USA

Sunday, November 24th, 2019

Feliciano Lpez got married to Sandra Gago earlier this year. Asked if they planned to have children, the Spanish player replied: "There are guys who take care of every detail and follow their routines while others travel with their family in tournaments.

I may become a father in a too far away future and I would like my child to come to see me play." On his longevity, Lopez added: "I did not expect to compete at the level I am. Turning 30, many of my friends were getting injured, dropping on the rankings and this age seemed difficult to overcome to me.

I was lucky to have a very good body and genetics to play tennis. It made me suffer a few injuries, so I changed the training regime and I started taking care of my eating regime. For a sportsman, dropping two or three kilos is major and so you start playing better.

Winning the Queen's title at 34 years of age and another time at 37 was very satisfying. I started thinking that it could not happen to me. Feeling competitive physically at this age made me stronger mentally because despite I travel with a physiotherapist that has been taking care of my body for years, I do not recover in the same way after matches.

"You have to handle the kind of sponsor because as a famous person you have a social responsibility. Brands like alcohols or betting companies, you have to be very careful."

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Feliciano Lopez planning to have children with wife in the future - Tennis World USA

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Microbiota and the social brain – Science Magazine

Friday, November 1st, 2019

Animal sociability through microbes

Accumulating evidence suggests that the microbiota living in and on animals has important functions in the social architecture of those animals. Sherwin et al. review how the microbiota might facilitate neurodevelopment, help program social behaviors, and facilitate communication in various animal species, including humans. Understanding the complex relationship between microbiota and animal sociability may also identify avenues for treating social disorders in humans.

Science, this issue p. eaar2016

Increasingly, it is recognized that the microbes resident in the gastrointestinal tract can influence brain physiology and behavior. Research has shown that the gastrointestinal microbiota can signal to the brain via a diverse set of pathways, including immune activation, production of microbial metabolites and peptides, activation of the vagus nerve, and production of various neurotransmitters and neuromodulators in the gut itself. Collectively, this bidirectional pathway is known as the microbiota-gut-brain axis. In the absence of a microbiota, germ-free and antibiotic-treated mice exhibit alterations to several central physiological processes such as neurotransmitter turnover, neuroinflammation, neurogenesis, and neuronal morphology. Perhaps as a result of these neurological alterations, the behavior of rodents lacking a microbiotaespecially social behavioris remarkably different from that of rodents colonized with bacteria. Conversely, supplementation of animals with certain beneficial live bacteria (e.g., Bifidobacterium and Lactobacillus) can lead to notable improvements in social behavior both in early life and in adulthood. Collectively, these results suggest that microbial signals are important for healthy neurodevelopment and programming of social behaviors in the brain. Although research on the functional and ecological implications of the gut microbiota in natural populations is growing, from an evolutionary perspective it remains unclear why and when relationships between microbes and the social brain arose. We propose that a trans-species analysis may aid in our understanding of human sociability.

Sociability comprises a complex range of interactive behaviors that can be cooperative, neutral, or antagonistic. Across the animal kingdom, the level of sociability an animal displays is variable; some are highly social (e.g., primates, termites, and honey bees), living within cooperative communities, whereas others have a mostly solitary existence (e.g., bears). Consequently, although studies on germ-free and antibiotic-treated animals have yielded insights into how the microbiota may influence social behaviors, they are perhaps too reductionist to fully appreciate the complex relationship between symbiotic bacteria in the gastrointestinal tract and host sociability when considering a broader zoological perspective. Some social interactions have evolved to facilitate horizontal transmission of microbiota. Observations across both invertebrate and vertebrate species suggest that factors such as diet and immunity generate selection pressures that drive the relationship between microbiota and social behavior. Although microbiota may influence behaviors endogenously through regulation of the gut-brain axis, some animal species may have evolved to use symbiotic bacteria exogenously to mediate communication between members of the same species. Hyenas, for example, produce an odorous paste from their scent glands that contains fermentative bacteria that is suggested to facilitate social cohesion among conspecifics. This complex relationship between animals and microbiota raises the hypothesis that microbes may have influenced the evolution of the social brain and behavior as a means to propagate their own genetic material.

Understanding the factors that affect the development and programming of social behaviors across the animal kingdom is important not only in terms of rethinking the evolution of brain physiology and behavior, but also in terms of providing greater insight into disorders of the social brain in humans [including autism spectrum disorders (ASDs), social phobia, and schizophrenia]. Evidence for a link between the microbiota and these conditions is growing, and preclinical and emerging clinical data raise the hypothesis that targeting the microbiota through dietary or live biotherapeutic interventions can improve the associated behavioral symptoms in such neurodevelopmental disorders. Larger clinical trials are required to confirm the efficacy of such interventions before they are recognized as a first-line treatment for neurodevelopmental disorders. Although such connections between gut bacteria and neurodevelopmental disorders are currently an intriguing area of research, any role for the microbiota in the evolution of social behaviors in animals does not supersede other contributing factors. Rather, it adds an additional perspective on how these complex behaviors arose.

The bidirectional pathway between the gut microbiota and the central nervous system, the microbiota-gut-brain axis, influences various complex aspects of social behavior across the animal kingdom. Some animals have evolved their own unique relationship with their gut microbiota that may assist them in interacting with conspecifics. The relationship between the gut microbiota and social behavior may help to explain social deficits observed in conditions such as autism spectrum disorders (ASDs) and could potentially lead to the development of new therapies for such conditions.

Sociability can facilitate mutually beneficial outcomes such as division of labor, cooperative care, and increased immunity, but sociability can also promote negative outcomes, including aggression and coercion. Accumulating evidence suggests that symbiotic microorganisms, specifically the microbiota that reside within the gastrointestinal system, may influence neurodevelopment and programming of social behaviors across diverse animal species. This relationship between host and microbes hints that host-microbiota interactions may have influenced the evolution of social behaviors. Indeed, the gastrointestinal microbiota is used by certain species as a means to facilitate communication among conspecifics. Further understanding of how microbiota influence the brain in nature may be helpful for elucidating the causal mechanisms underlying sociability and for generating new therapeutic strategies for social disorders in humans, such as autism spectrum disorders (ASDs).

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The pros and cons of weight loss surgery for children – Deseret News

Friday, November 1st, 2019

SALT LAKE CITY When she was 8 years old, Mary was writing about diets in her journal. She did Optifast like Oprah Winfrey. She was always eating too much or eating too little, always thinking about what she was eating and what the scale said.

Only as a mom in her 40s was she able to stop obsessing about her weight, after having surgery that removed 80% of her stomach.

Surgery, for me, has really been a blessing, physically and emotionally. I feel free from the physical and emotional burden that I felt when I weighed so much more, the Utah mom said.

Thats why Mary was willing to consider bariatric surgery for her children when they, too, became extremely overweight. Four of her seven children have had their digestive system reordered, severely restricting what and how much they eat and drink.

The surgery is controversial and only rarely performed on minors, but that could change now that the leading group of pediatricians has issued a policy statement urging more access to metabolic and bariatric surgery for adolescents.

In a report released Sunday, the American Academy of Pediatrics said age should not be a barrier to surgery for a child with extreme obesity and that insurance companies should cover the procedure.

Although behavioral and lifestyle interventions will be successful for certain individuals, the overall outcomes of behavioral and lifestyle interventions are discouraging when viewed as a solution for a larger number of patients with severe obesity. Youth with severe obesity require effective intervention to prevent a lifetime of illness and poor quality of life, the AAP statement said.

Mary, who did not want to be identified because of potential problems with health insurance coverage, said that parents of extremely overweight adolescents should consider weight loss surgery if the child wants it, even though the procedure is rarely covered by insurance and can cost upwards of $10,000. She wishes shed had the option when she was a child and believes it would have radically changed her life for the better.

Think about how many parents are willing to shell out big bucks for braces, and thats primarily a cosmetic thing, Mary said. This is someones health. This is their longevity.

Goodbye, soda pop

Weight loss surgery has lifelong implications, but so does obesity.

Obesity is associated with cardiovascular disease, Type 2 diabetes, sleep apnea, fatty liver disease and gastroesophageal reflux disease, among others. It is also increasingly implicated in 12 types of cancer.

And the number of American children with severe obesity has nearly doubled since 1999. Nearly 10% of 12- to 15-year-olds have obesity, and 14% of 16- to 19-year-olds do.

Even in Utah, where childhood obesity rates are historically among the lowest in the nation, obesity is increasing, said Dr. Eric Volckmann, director of the University of Utah Health Care Bariatric Surgery Program in Salt Lake City.

While behavioral changes can provide moderate, short-term success for young children and those at lower weights, for children whose obesity is severe, metabolic changes make it more difficult to lose weight and to keep it off, the AAP said.

There are a variety of ways to alter the digestive system so that people dont overeat. The most common are the gastric bypass, sleeve gastrectomy, adjustable gastric band and biliopancreatic diversion with duodenal switch, according to the American Society for Metabolic and Bariatric Surgery.

Most people will have to make changes beyond how much they eat, however. For example, carbonated beverages can cause discomfort after some types of surgery, which means soda pop is history. Alcohol potency goes up by 300% in people who have had a gastric bypass. And most people will have to take vitamins and supplements for the rest of their lives, lest they become severely malnourished.

Anyone considering weight loss surgery needs to understand that the surgeries are just a tool and they all require patients to make dietary changes and lifestyle modifications to be successful and to maintain weight loss. None of the operations are a quick fix, Volckmann said.

The surgery is controversial for adults and rare among children or teens. The American Society for Metabolic and Bariatric Surgery says that of 227,000 procedures performed by its member surgeons in 2017, only about 300 involved people under the age of 18.

Dr. Daniel Cottam of the Bariatric Medicine Institute in Salt Lake City said he operates on a dozen or fewer teens every year.

Bariatric surgery appears to be a valuable tool in treatment of obesity, Dr. Jacob M. Appel, an assistant professor and director of ethics education in psychiatry at Icahn School of Medicine at Mount Sinai in New York City, said in an email. But, he added, It is only one tool in that arsenal. which should also include efforts at the societal level to improve the food environment for children and to address the nutritional deserts in which many low-income children are forced to live.

Are parents to blame?

Had she not had the surgery herself, Mary said she probably would never have considered it as an option for her children, even when several of them became more than 100 pounds overweight.

I spent so many decades of my life dieting and trying to lose weight and feeling like a failure every time the weight came back on. It has been refreshing for me to be free of that constant pressure I put on myself, she said.

Mary said she knows that some people will judge her parenting and blame her for what she fed her children when they were young. But she notes that many nutrition scientists have come to realize that her generation, and her parents, were given bad information about what comprises a healthy diet. And Mary said that her family is prone to gaining weight on a high-carbohydrate diet, even if the carbohydrates are nutrient-rich.

If I could do it over, I wouldnt have followed the food pyramid, which has so much focus on bread and rice and cereal and grain, she said. We are very carb-sensitive; we dont process carbs like most people do.

While some people still believe obesity is caused by a sedentary lifestyle and poor food choices, that hasnt been the position of the American Medical Association since 2003, when the AMA declared obesity a disease.

Skinny people believe obesity is caused by life choices. Thats only partly true, Cottam said. Most people who become really obese, especially children, they have metabolisms that predispose them to this.

In its 2018 best-practice guidelines for pediatric surgery, the American Society for Metabolic & Bariatric Surgery said that, like cancer, obesity is a multifactorial disease caused by a combination of genetics, environment and metabolic programming. The group said that surgery shouldnt be a treatment of last resort but should be readily offered to adolescents who are extremely obese.

In its new policy statement, the AAP said that its recommendations are for adolescents between the ages of 13 and 18 whose body mass index is 35 or greater, or a BMI that is 120% or greater of the 95th percentile for their age and sex.

Appel, the author of a new book on medical ethics, Who Says Youre Dead?, said all elective surgery should be approached with care, especially when children and adolescents are involved.

At a minimum, minors should assent to the surgery and be given sufficient time to reflect upon the decision and its implications. At the same time, delay until the age of majority while appropriate for some conditions may not be suitable here, he said.

Extreme obesity has both physical and psychological implications for many youths that cannot be reversed by surgery as adults, so pushing off interventions until the age of majority is often not in the best interests of the child or teen.

Safer than gallbladder surgery

No matter how effective, surgery of any kind comes with risk.

Death resulting from weight loss surgery is extremely rare; one study published in 2011 found 18 deaths within 30 days of bariatric surgery among 6,118 patients, despite the fact that bariatric surgical patients are virtually by definition high risk surgical candidates.

A study of 60,000 patients from physicians affiliated with the ASMBS had even lower one-month mortality rates: one out of 1,000 patients, or 0.13%.

This rate is considerably less than most other operations, including gallbladder and hip replacement surgery, the society says on its website.

But there are other risks, among them, a greater chance of developing an alcohol abuse disorder because the body develops a greater sensitivity to alcohol and some procedures result in higher levels of blood alcohol compared to people who have not had the procedure. Girls who have metabolic and bariatric surgery have a higher risk for pregnancy than their peers and may be at risk for complications during pregnancy and premature birth.

Some people report depression or sadness after having the procedure, and two studies have shown a small but significant increase in suicide.

The writer Roxane Gay, who had a sleeve gastrectomy in 2018, wrote about the experience, saying she was depressed and miserable.

Gay said that it is maddening that she can only eat tiny portions of the food that used to bring her comfort. After a few bites of anything, the discomfort begins, and then that discomfort evolves into pain, she wrote.

Besides the physical changes that weight loss surgery brings, it also shuts off or restricts a major source of human pleasure. That is one reason that Paige Fieldsted, a mother of two in Taylorsville, Utah, said that she has not seriously considered weight loss surgery and wouldnt have wanted it as a teen, even though she has struggled with weight issues since she was a child.

Food is very much for me, and for most people, a connector. Holidays center around food, and I want to be able to enjoy it, said Fieldsted, the author of Confessions From Your Fat Friend.

I understand what its like to be the biggest one in the room, to feel like the only way that things are going to get better for you is to get skinny. But I can also tell you from experience that thats not true, she said.

Mary also agreed that its important that parents of children with obesity focus on the positive things about their children and not just their weight. I wish I had focused more on their worth and self-esteem, all the great things about them. You have to be sure that they know you love them for who they are, that your love is not dependent on their weight.

Concerns about how a person will adapt to life-altering surgery is one reason that the American Academy of Pediatrics and most surgeons require an extensive period of preparation, especially for young patients. A comprehensive evaluation by a behavioral health clinician is essential early in the process to document the childs psychological well-being and to to assure that the child has the necessary social and emotional support to follow through with required postoperative lifestyle modifications.

No regrets

Despite the risks she and her children assumed, Mary said her family has no regrets about having had the surgery, which Mary and her husband paid for out-of-pocket. While she has not kept the surgery a secret from close family members and friends, she does not want to be publicly identified because of the possibility that her health insurance companies might not pay for any future complications that they might say were connected to the surgery, which they do not cover.

The possibility of complications is one reason that Volckmann in Salt Lake City warns people not to seek bariatric surgery for themselves or their children out of the country.

One adult from Utah died earlier this year after undergoing bariatric surgery in Mexico, and eight others were sickened by bacteria. But back at home, even minor complications will likely not be covered by any insurer who did not cover the initial surgery, Volckmann said. I would not allow a relative to have any type of surgical procedure where complications from that procedure werent covered. The financial risks would be too high. I dont think people understand that when they go to Mexico, he said, adding that he knows people who have had to declare bankruptcy because of medical bills stemming from complications from surgery.

The growth of medical tourism underscores the need for insurance companies to provide coverage for weight loss surgery, as the AAP recommends, he said. While the University Hospital does not offer bariatric surgery for anyone under the age of 18, he believes that if done in a well-developed program and done properly, it is appropriate to offer.

Its probably not for all adolescents, but its appropriate for some.

Volckmann said that insurance companies have resisted paying for weight loss surgery in part because there is no immediate benefit to them; a child will likely be off her parents policy before there is any payoff in improved health and lowered costs. But for society as a whole, there is a great return in terms of medical problems that can develop over time, Volckmann said.

At the Bariatric Medicine Institute, Cottam, too, expressed frustration with the lack of coverage. Why would you cover someones heart attack and not cover something that would prevent someones heart attack?

Mary, meanwhile, is happy with her choice to have surgery and to allow her children to do so. She notes, however, that her children were teenagers at the time of their surgery, and they made the decision without pressure from her.

Thats important for any family, she said.

If your child doesnt feel good about it, dont do it. But if the child is really wanting it and is determined and responsible and can be compliant, then I think that it can be a great blessing, she said.

Mary said that sometimes she will hear people making jokes about overweight people, and she sees it as a teachable moment. She will get out her phone and show them pictures of herself 110 pounds heavier. Despite the fact that she cant eat much without getting uncomfortable, shes comfortable now in ways she never was before. Never an athlete, she now hikes, runs and rappels.

Its not for everyone. I know people whose weight doesnt bother them, she said. But if I could have had that surgery as a teenager, I would have jumped at the chance.

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Dementia impacts women more and new approaches are needed | TheHill – The Hill

Thursday, October 31st, 2019

Americans are living longer thanks to medical and public health advances and greater access to health care. If youre a 65-year-old man in the U.S., you can expect to live another 20 years. American women can expect to live even longer to age 86.5.

While this is good news for most of us, increased longevity also creates new challenges. After we turn 65, our risk of developing dementia doubles every five years. By age 85, nearly one in three of us will have the disease. The impact on women is even greater.

New Milken Institute research estimates that by 2020, roughly 4.7 million women in the U.S. will have dementia, accounting for nearly two-thirds of everyone living with the disease. Women often experience a double whammy. Not only are they more likely to get the disease, they are also more likely to take on most caregiving responsibilities for spouses, parents, in-laws and friends.

Women caregivers are more likely to be impacted financially as they leave jobs or miss work to care for family members. Our analysis predicts that the economic costs of treatment, care and lost productivity due to women suffering from Alzheimers and dementia will total $2.1 trillion by 2040, representing over 80 percent of the cumulative costs.

Communities of color face an even greater threat. Older African Americans have the highest risk of dementia, followed by American Indians/Alaska Natives and Latinos. This increased risk, coupled with income differences and cultural attitudes toward family caregiving, results in communities of color shouldering more direct care for people living with dementia than white populations.

Ive experienced firsthand the devastating impacts of Alzheimers disease on families. My dad and his three siblings were diagnosed within a 10-year time frame. As in most families, the emotional and economic strains fell primarily on the women.

My Aunt Trudy, a Julliard-trained concert pianist, began showing signs of dementia in her early 70s. She had chosen her career over a family as many women of her generation had to do. Trudy had no kids, husband, or much savings, so my family patched together a mix of paid and volunteer caregivers to provide her meals, rides, and companionship.

After it became too much of a strain on our finances, young families, and work lives, we had to place her in a nursing home paid for by Medicaid a harrowing decision made by countless Americans every day. Aunt Trudy maintained her indomitable spirit until the end. When she could no longer speak, she could still play the piano by heart, to the delight of many who sang tunes beside her.

Unfortunately, 10 years since Aunt Trudy died, Alzheimers is the only disease among the top-10 causes of death in the U.S. with no known cure. Recent Phase III drug trial failures this year represented a setback in research.

But thanks to increased National Institutes of Health funding to study Alzheimers disease, researchers today understand better dementias pathology. Perhaps most hopeful for those of us at high risk for dementia, emerging evidence shows that despite family history and personal genetics, lifestyle changes such as a diet, exercise, and better sleep can improve brain health.

Increased participation by women in clinical trials has helped us understand why more women than men have dementia. Researchers believed dementia is primarily connected to longer life expectancy. But new studies have linked it to biological differences, such as hormonal imbalances, that change brain chemistry.

With no cure in sight, we must double our efforts to reduce the risk and cost of dementia. At the Milken Institute, we work to solve significant global problems. That is why we are making recommendations to improve brain health, reduce gender and racial disparities, and ultimately change the trajectory of this devastating disease.

Most importantly, we must spread awareness of how individuals, communities, and health professionals can improve cognitive function and brain health for all ages. If we can delay the onset of dementia by only five years, we can cut the incidence in half.

With more women working full-time and family size decreasing, we must increase efforts to create a dementia-capable workforce to effectively identify people with dementia, tailor services to meet their needs and those of their caregivers, and ensure those living with dementia get the right care at the right time. The high costs of care for Medicare beneficiaries with dementia are linked to avoidable hospitalizations, poor coordination across care teams, and ineffective care transitions.

We offer many more ideas in the new report, Reducing the Cost and Risk of Dementia: Recommendations to Improve Brain Health and Reduce Disparities. We are in a race against time. We want to ensure that all of us will be singing songs by heart and enjoying our family and friends as we age. To provide a better future for millions of Americans impacted by dementia, we must act now.

Nora Super is senior director of the Milken Institute Center for the Future of Aging. She previously was executive director of the White House Conference on Aging.

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Does the human lifespan have a limit? – Varsity Online

Sunday, October 27th, 2019

How many of us will see our 100th birthdays?DoD photo by U.S. Navy Petty Officer 2nd Class Kayla Jo Finley/Released

The maximum lifespan of an organism varies significantly between species, ranging from a single day for mayflies, to several hundred years for Greenland sharks. While the goal for most organisms at an evolutionary level is to reproduce, humanity continuously aimed at increasing our lifespan. Life expectancy is used as an indicator of a countries development, as well as a measure of social and scientific progress. A longer life would permit us to spend more time having valuable life experiences, make crucial contributions to our fields of work, potentially helping humanity progress further as a species.

Recent medical advances allow us to further pursue this quest. The average life expectancy in the U.K. is around 81 years currently significantly higher than the 35 years it was in the 17th century. We now live in an era of diseases of old age, where degenerative disorders such as dementia are dubbed the biggest health crisis of our time in developed countries. This poses an important question are our bodies biologically capable of sustaining the lifespans we strive for, or are we being overly ambitious?

Research into longevity is extremely complex and controversial. We only know of 48 people in history who have lived past the age of 115. It was already hypothesised in 1825 that mortality rates increase exponentially with age, implying that human life expectancy must tend towards a maximum value. A 2016 study claimed that even with a perfectly healthy lifestyle and access to medical interventions when necessary, the natural biological human age limit is approximately 115, with only a few individual outliers, in part due to their genetic architecture. This would imply that regardless of the technology we develop, it should be unable to increase our life expectancy past this limit.

This is a plausible suggestion when we consider ageing on a cellular level. The Hayflick limit refers to the number of times that most cells divide before entering senescence. Hayflick (currently a UCSF Professor of Anatomy at 91 years of age) proposed this theory in the 60s, after finding that a human cell population could only divide between 40 to 60 times in culture before entering senescence. Elizabeth Blackburn, Carol Greide and Jack Szostak went on to win a Nobel prize in 2009 for their discover that this correlates with telomeres (repetitive sequences of DNA at the ends of chromosomes that protect them) being reduced to a critical length, since these shorten after each cell division.

We only know of 48 people in history who have lived past the age of 115

Even if the body did not undergo any other processes of ageing, the accumulation of senescent cells would eventually cause death. Almost all senescent cells either self-destruct or are destroyed by the immune system, though a small number remain and have a strong signalling effect which can lead to chronic inflammation or disruption of nearby tissues and potentially even stimulate surrounding cells to become senescent. These processes are thought to be linked to the development of numerous age-related diseases, including Alzheimers and Type II diabetes. It appears that regardless of the condition the body is kept in, degenerative conditions will inevitably catch up with everyone.

Recent investigations carried out in Italy by observing lifespans of over 3,000 individuals over the age of 100 have revealed that annual mortality risks plateau by the age of 115 at around 50%. This is likely because any age related disorders that were to occur would have set in by this point. As a majority of diseases is associated with increasing age, we need to better understand what is driving ageing. We may be able to, through a mixture of medical, lifestyle, and environmental interventions push our life expectancy up.

But what about going further than, say, 115 years? While the early attempts at extending telomeres (using the enzyme telomerase) caused cells to become cancerous, more recent efforts using more controlled delivery systems are more promising at increasing lifespan without the added cancer risk. Promising results have recently arisen in the form of research carried out by the Spanish National Cancer Centre.

It could be possible for us to alter our susceptibility to the degenerative effects of age

The telomeres of mice embryonic stem cells were elongated beyond normal levels, and mice developing from these stem cells were generated. These mice had a 12.8% increase in median longevity, and an 8.4% increase in maximum longevity, compared to mice with normal telomere length. The mice also underwent less DNA damage as they aged, and showed lower cholesterol and LDL levels, as well as improved glucose and insulin tolerance.

Such research demonstrates that it could be possible for us to alter our susceptibility to the degenerative effects of age. Much remains to be discovered at what governs the rate of ageing, and then, whether reductions in the rate of ageing actually translate to longer lifespans, or simply to better health along the lifespan.

While many questions remain concerning the upper bound on lifespan, much could be done to increase life expectancy right now. In the last 100 years, the increase in life expectancy can be attributed to factors such as effective immunisation programs, antibiotics and public health initiatives around hygiene and sanitation. While life expectancies may appear to be approaching a plateau, many believe that developments in fields such as artificial intelligence and genetics could be responsible for our next surge in life expectancy by improving the ways in which we deliver healthcare. Some claim that it does not matter if our bodies degrade if we are able to develop technologies such as prosthesis and bionics.

While extending lifespan may seem like an exciting concept, this may pose additional challenges on both a societal and personal level. For instance, we are already struggling as a planet with overpopulation and its associated consequences, such as carbon emissions. Increased life expectancy has played a role in the development of this problem and may continue to do so. Many countries, such as Japan, have an aging population individuals aged 65 and older in Japan make up a quarter of its total population, estimated to increase to a third by 2050. Therefore, the dependency ratio (the proportion of workers to non-workers) creates a need for more efficient social care provision and strategies. .

Ageing is a natural process, and it may not necessarily be possible to halt the clock. As a species, we seem to have more control over how long we live than many other species do. In modern society, it is becoming increasingly more likely that excess of food or age related degenerative disorders will kill us rather than starvation or disease. However, if we do strive to push our life expectancies to new limits, it is vital that we consider the challenges this will pose for our bodies and society.

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Thinking about death: High neural activity is linked to shorter lifespans – Big Think

Sunday, October 27th, 2019

If there's one thing that humans can't stop thinking about, it's death. But new research published in the journal Nature suggests that all that thinking might be the very thing that brings death on.

More precisely, researchers discovered that higher neural activity has a negative effect on longevity. Neural activity refers to the constant flow of electricity and signals throughout the brain, and excessive activity could be expressed in many ways; a sudden change in mood, a facial twitch, and so on.

"An exciting future area of research will be to determine how these findings relate to such higher-order human brain functions," said professor of genetics and study co-author Bruce Yankner. While it's probably not the case that thinking a thought reduces your lifespan in the same way smoking a cigarette does, the study didn't determine whether actual thinking had an impact on lifespan just neural activity in general.

To say this was an unexpected finding is an understatement. We expect that aging affects the brain, of course, but not that the brain affects aging. These results were so counterintuitive that the study took two additional years before it was published as the researchers gathered more data to convince their reviewers. Yankner was forbearing about the delay. "If you have a cat in your backyard, people believe you," he said. "If you say you have a zebra, they want more evidence."

Yankner and colleagues studied the nervous systems of a range of animals, including humans, mice, and Caenorhabditis elegans, or roundworm. What they found was that a protein called REST was the culprit behind high neural activity and faster aging.

First, they studied brain samples donated from deceased individuals aged between 60 and 100. Those that had lived longer specifically individuals who were 85 and up had unique gene expression profile in their brain cells. Genes related to neural excitation appeared to be underexpressed in these individuals. There was also significantly more REST protein in these cells, which made sense: REST's job is to regulate the expression of various genes, and it's also been shown to protect aging brains from diseases like dementia.

But in order to show that this wasn't simply a coincidence, Yankner and colleagues amplified the REST gene in roundworm and mice. With more REST came quieter nervous systems, and with quieter nervous systems came longer lifespans in both animal models.

Zullo et al., 2019

Normal mice (top) had much lower levels of neural activity than mice lacking the REST protein (bottom). Neural activity is color coded, with red indicating higher levels.

Higher levels of REST proteins appeared to activate a chain reaction that ultimately led to these increases in longevity. Specifically, REST suppressed the expression of genes that control for a variety of neural features related to excitation, like neurotransmitter receptors and the structure of synapses. The lower levels of activity activated a group of proteins known as forkhead transcription factors, which play a role in regulating the flow of genetic information in our cells. These transcription factors, in turn, affect a "longevity pathway" connected to signaling by the hormones insulin and insulin-like growth factor 1 (IGF1).

This longevity pathway has been identified by researchers before, often in connection with possible benefits to lifespan from fasting. Additionally, the insulin/IGF1 hormones are critical for cell metabolism and growth, features which relate to longevity in obvious ways.

The most exciting aspect of this research is that it offers targets for future research on longevity, possibly even allowing for the development of a longevity drug. For instance, anticonvulsant drugs work by suppressing the excessive neural firing that occurs during seizures, and in studies conducted on roundworms, they've also been shown to increase lifespan. This recent study shows that this connection might not be coincidental. Similarly, antidepressants that block serotonin activity have also been shown to increase lifespan. Dietary restriction has long been implicated in promoting longer lifespans as well. Dietary restriction lowers insulin/IGF1 signaling, which this study showed affects the REST protein and neural activity. More research will be needed to confirm or reject any of these possibilities, but all represent exciting new avenues to explore, possibly resulting in the extension of our lifespans.

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