Wearing masks, keeping your distance, washing your hands those rulescurrently apply around the globe. There is not much more we can do, except wait for an effective drug against COVID-19 to be developed. Right? No, not quite!
There is something else that is now more important than ever and that should be no less stressed than good hand hygiene. Something that has not gained a prominent place in either the public debate or in the catalogue of government recommendations: a functioning immune system.
Biochemist Adrian Gombart, who is doing research on the relevance of nutrients for the immune system at the Linus Pauling Institute of Oregon State University, wanted to change this situation. Together with his colleagues, he set about producing a review paper summarizing the results of studies on different nutrients and their influence on the human immune system. These are findings that could be an additional weapon in the fight against the novel coronavirus.
Read more:The race towards a coronavirus vaccine: What's the latest?
Nothing works without vitamins
"The measures being taken are all important. But it is also important that we pay attention to our nutrient status so that our immune system can function at all," said Gombart. This is especially important in stressful times like these, when we tend to comfort ourselves with junk food, he says. After all, getting enough nutrients is not really a focus of our interest at the moment.
Yet vitamins C and D and other micronutrients such as zinc, iron and selenium are much more than just "nice to have." In the worst case, a nutrient deficiency can open the door to the viruses because the body is unable to defend itself against the invaders. For people who belong to a risk group, the danger of a severe course of disease is then particularly high.
This comes down to simple biochemistry: "Every cell in our body uses different micronutrients to function," says Gombart. Micronutrients include vitamins, minerals and omega fatty acids.
Unlike macronutrients such as fat, carbohydrates and protein, the micronutrients do not provide the body with energy, but they are nevertheless essential for the basic functions of an organism not only for cell metabolism, but also for the defense system.
Holding the lines of defense
Adrian Gombart's research focuses mainly on vitamin D. "A few years ago, our research group discovered that vitamin D regulates the expression of a gene encoding an antimicrobial peptide," he says. Such peptides are involved in the body's non-specific defense mechanisms. "Vitamin D is also involved in the regulation of other immune-related genes," Gombart says.
Read more:The immune system's fight against the coronavirus
On the other hand, a vitamin D deficiency can leave a gap in our body's defenses. Intruders then have an easier time of it.
But in the best-case scenario, the human body can do a lot to defend itself. Intruding germs must first pass through the skin and mucous membranes. If they manage to overcome this first line of defense, the body reacts to the invaders with phagocytes, antimicrobial proteins and inflammation. These processes are among the body's non-specific defense mechanisms. But if this generalized defense does not help, things have to become more precise.
SARS-CoV-2 can be fought only by a very specific immune response. Lymphocytes detect foreign microorganisms and molecules alien to the body such as viruses. The lymphocytes can then produce antibodies and go into battle like sharpshooters.
Vitamin C against pathogens
These processes can function as they are meant to only if the body is well-equipped for example, with vitamin C. "Vitamin C is needed, among other things, to form reactive oxygen species, also known as oxygen radicals. These radicals are another of the body's weapons in the fight against pathogens," says Gombart. Vitamin C is also involved in the production of antibodies, without which the body cannot keep COVID-19 in check.
High doses of vitamin C are thus used to treat patients suffering from COVID-19and undergoing intensive medical treatment, says Isabelle Schiffer.
Schiffer is a geneticist and gerontologist and the scientific spokesperson of the Forever Healthy Foundation. When there isn't a pandemic going on, Schiffer and her colleagues examine the question of how people can become as healthy as possible as they age. Their recommendations are based on findings from various scientific disciplines.
Read more:The danger of vitamin D deficiency
Naturopathy from a scientific point of view
This holistic approach also includes naturopathy. In order to "make a contribution" during the coronavirus crisis, as Schiffer says, the Forever Healthy team set out to find medicinal plants whose effectiveness has been confirmed in clinical studies.
"We have found that there is very little knowledge about plant substances that might potentially be able to help attenuate symptoms or alleviate the course of an infection," says Schiffer. The scientist finds it important to emphasize that naturopathy cannot replace conventional medicine, but can complement it.
"Many people who hear the term 'naturopathy' immediately have an image in their minds of some miracle healer who wants to cure cancer. That is, of course, not what naturopathy can do," says Schiffer. It is much more about strengthening the immune system, she says.
Schiffer and her colleagues have identified elderberry as one of the plant substances that might be helpful in the fight against COVID-19: "Clinical studies have shown that elderberry extract reduces the likelihood of catching a cold and shortens the duration of respiratory problems in influenza patients," said Schiffer.
Read more:Is taking too many vitamins harmful?
Food or dietary supplement?
The positive effect of elderberry is not mere hocus-pocus but has to do with biochemistry: It contains numerous vitamins and trace elements. Both Isabelle Schiffer and Adrian Gombart believethat it is currently advisable to increase the dose of vitamins and other micronutrients with the help of supplements. Most people lack enough vitamin D in particular.
The German Federal Institute for Risk Assessment (BfR) does not share their view of the efficacy of supplements: "In principle, a balanced and varied diet provides the healthy body with all substances essential to life," it says in a statement.
However, the institute admits that there are exceptions to this rule: During pregnancy and breastfeeding, the need for nutrients is increased. Elderly people, who are the top risk group in the current situation, also often tend to not haveenough of them.
There is much to suggest that the question of a functioning immune system deserves a higher priority in the political debate on public health. Healthy eating should not be a question of lifestyle but a measure for the prevention of disease. Just like thorough hand washing.
Although the pineapple's exact origins remain unknown, Christopher Columbus is said to have discovered the pineapple in Guadeloupe, a Caribbean island colonized by the French in the 17th century. Pictures like this one (from France, around 1900), showing a farming collective, were supposed to bring Europeans closer to the exotic flora of their South Sea colonies.
Have you ever thought about how a pineapple grows? What the plant actually looks like? It's a member of the Bromeliaceae family; bromeliads are popular indoor plants in Germany because they are robust and form pretty flowers. Rooted in the soil, the pineapple plant forms a trunk with many thick-fleshed leaves. The flower develops at the upper end of the stem.
The blossom is comprised of many small, individual blossoms around 100 to 200 pieces. Over time, they develop into the pineapple fruit. Even though the plant can grow quite large, botanists have labeled the pineapple as a berry.
The pineapple is a miracle-worker, health-wise. It contains loads of vitamin C alongside other minerals and trace elements like manganese, copper, magnesium, phosphorus, iron, iodine, zinc and an enzyme called bromelain, said to be good for digestion. Pineapple regulates metabolism and is a mood enhancer. In addition, it is said to help with detoxify and most importantly make one beautiful.
Although the pineapple is healthy, it is not necessarily good for weight loss. One popular pineapple diet would have you eating just pineapple while drinking plenty of water or tea. If you do this for a few days, you actually lose weight. Not so fast, though: The pineapple does not lead to long-term loss of fat, but only dehydrates you. Once the diet is over, the famous yo-yo effect occurs.
German TV chef Clemens Wilmenrod claimed to have invented Toast Hawaii in the 50s. A slice of toast with ham, a slice of pineapple and the whole thing covered with melted cheese and voila! One of the most popular German dishes of the 70s and 80s, these sandwiches can still be found on the menu of many of the country's snack bars or parties to this day. The Italian version: pizza Hawaii.
Asian cuisine, in contrast, is a bit more refined in its use of pineapple. An integral part of a typical vegetable mix, the pineapple is used in dishes from Vietnam, Thailand or Cambodia. This photo shows the Cambodian fish dish "Amok Trey," made with coconut milk, lemongrass, mushrooms and pineapple.
Pia Colada means sifted pineapple in Spanish. It's a sweet and creamy cocktail mixing coconut cream, rum and pineapple. Some bartenders add a touch of cream and coconut liqueur. The recipe is not a hard one: 6 cl white rum, 2 cl coconut liqueur, 10 cl pineapple juice, 2cl cream, 4cl coconut milk. Put everything in the shaker and shake well. Put ice into the glass, pour over it, decorate: ready.
Author: Silke Wnsch (ct)
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COVID-19: How to boost the immune system with vitamins - Deutsche Welle
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