If the diagnosis is “Covid-19 positive”, those affected often begin a journey up and down the valley of emotions. The fear of a severe course that requires ventilation in the clinic is great – especially when people of older age or with previous illnesses are affected. New studies on Covid-19 are now giving hope in this regard because they suggest that vitamin D can alleviate the severity of the disease and reduce the risk of death. We’ll tell you how vitamin D affects a SARS-CoV-2 infection and whether it makes sense for you to take vitamin D supplements to prevent Covid-19.

Vitamin D: involved in many immune processes in the body

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Vitamin D is a very special vitamin because the body can produce it itself from the precursors present in the body. This doesn’t work with other vitamins. The vitamin has many different tasks in the body:

It promotes the absorption of calcium from the digestive tract
It is used to harden the bones
It affects muscle strength
It regulates the phosphate and calcium metabolism
It is involved in numerous metabolic processes in the body
A good supply of vitamin D to the body is very important so that all immune and metabolic processes function as intended. This is nothing new, but a scientifically proven fact. Conversely, this means: A vitamin D deficiency can lead to the immune system not working properly. As a result, the organism is more susceptible to infections, which could lead to a severe course in the event of illness with the novel Covid-19 virus. So at the moment, you should pay more attention to an adequate vitamin D intake.

A good supply of vitamin D through food: what matters

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But that’s not that easy, because – unlike other vitamins – the so-called sun vitamin is only found in a few foods. It is simply not possible to meet needs through food alone. Only about ten to 20 percent of the vitamin D requirement can be obtained through a balanced diet. In order for you to succeed, you should regularly consume the following foods, as they have a high vitamin D content :

Dairy products
Fish / marine animals
Meat / poultry / sausage
Eggs
Fruits / vegetables / mushrooms
Fats
There are also foods fortified with vitamin D. They can also help meet the daily vitamin D requirement and replenish a memory that has already been over-emptied. In stores, for example, you can find muesli, juices, and plant-based drinks that are fortified with vitamin D.

Fresh air and sunshine: important for a vitamin D supply

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In general, however, diet plays a subordinate role in the supply of vitamin D. Because: A large part of your vitamin D storage is filled by your body on its own. The body is able to produce the vitamin itself. For this, however, it is important that sufficient UVB rays from the sun hit your skin.

The vital vitamin can only be formed in the kidneys and liver and stored in the body if there is enough sunlight. In summer, it is important to ensure adequate vitamin D production. You have to be in the sun with your face, hands, arms, and legs for five to 25 minutes a day – depending on your skin type. A walk during the lunch break is sufficient for this.

In the cold season, the body can then draw on the well-filled reservoir. The sun shines too seldom in this country in winter and too little intensity to be enough for vitamin D production. If you have neglected to fill your storage tank during the warm season – for example, because you always wear a lot of sun protection and spend most of your time in the shade – it can happen that your vitamin D reserves are already used up at the beginning of winter, and then you suffer from a shortage.