Vitamin D in food – how to optimally supply your body

Vitamin D – the “sunshine vitamin” – is essential for your health. It not only strengthens your bones but also plays a vital role in your immune system, muscles, and mood. However, in our latitudes, getting enough of it isn't always easy.

Many people don't know that vitamin D can be obtained not only through sunlight but also through certain foods. But which ones exactly? And how much can you actually get from your diet?

This article will tell you everything about vitamin D in foods, which sources really count, how high the levels are, and why a self-test can be useful to know your status.

👉 If you want to know immediately whether you have sufficient levels: Here you will find the Vitamin D self-test , with which you can easily check your levels from home.

What is vitamin D and why is it so important?

Vitamin D is a fat-soluble vitamin and, strictly speaking, is more of a hormone precursor than a classic vitamin. It is produced in the body when your skin comes into contact with sunlight (UVB radiation).

Main functions of vitamin D:

• Regulates calcium and phosphate metabolism → important for bones and teeth

• Supports muscle function

• Strengthens the immune system

• It has an effect on the psyche (mood improvement, protection against depression)

• It plays a role in cell division

Since vitamin D influences so many processes, an adequate supply is crucial.

You can find more information about holistic health on the MyBodyX homepage .

Vitamin D in food – which sources are relevant?

In reality, there are very few foods that contain significant amounts.

Oily fish

Foods particularly rich in vitamin D include:

• Salmon

• mackerel

• herring

• Sardines

Salmon contains up to 16–25 µg of vitamin D per 100 g, mackerel around 8–15 µg. This makes them among the top sources.

egg yolk

Eggs also contain vitamin D, with the concentration in the yolk.

One egg yolk provides approximately 1.5–2 µg of vitamin D. The content can vary depending on the chickens' diet.

Mushrooms

Mushrooms such as button mushrooms, shiitake mushrooms, or porcini mushrooms contain vitamin D2. The level is particularly high when the mushrooms have been exposed to UV light.

This allows for levels of up to 10 µg per 100 g.

Fortified foods

Since the natural selection is limited, some foods are fortified, e.g.:

• margarine

• breakfast cereals

• plant milk

You will often find 1–2.5 µg per serving.

Is vitamin D sufficient through diet?

According to the German Nutrition Society (DGE), the recommended daily intake is 20 µg per day (with no sun exposure). This is difficult to achieve through food alone.

• 100 g salmon → approx. 16–25 µg

• 2 eggs → approx. 3–4 µg

• 100 g UV-treated mushrooms → up to 10 µg

Realistically, vitamin D requirements can only be partially met through diet. Especially in winter, the supply is often critical.

Vitamin D deficiency – why it is so widespread

Studies show that in Germany, Austria, and Switzerland, over 60% of people have insufficient vitamin D levels during the winter. Reasons:

• Little sunlight during the winter months

• Lots of time spent indoors

• Low proportion of vitamin D-rich foods in the diet

Typical symptoms of a deficiency:

• fatigue

• Muscle weakness

• Susceptibility to infection

• Low moods

A vitamin D self-test can help you gain clarity. See the self-test overview here.

Vitamin D testing – why a self-test makes sense

Instead of guessing whether your levels are sufficient, you can simply have your levels measured.

Possibilities:

1. Blood test at the doctor's office

2. Self-test for home use – with finger prick and laboratory analysis

👉 The Vitamin D self-test provides you with accurate results and helps you to adjust your diet or supplementation accordingly.

FAQ – Frequently Asked Questions about Vitamin D in Foods

1. Which foods contain the most vitamin D?
Fatty fish such as salmon, mackerel and herring are the best natural sources.

2. Can I meet my needs solely through food?
It's difficult. Even with fish, eggs and mushrooms, it's hard to get 20 µg daily.

3. Are plant-based sources sufficient?
Mushrooms provide vitamin D2, which is less effective than vitamin D3 from animal sources.

4. What is better: sunlight or food?
Sunlight is the main source. Food can supplement it, but is not sufficient on its own.

5. Should I take additional vitamin D?
Supplementation is particularly useful in winter – but ideally after a test.

Conclusion – Your path to optimal care

Vitamin D in food is important – but the selection is limited. Fatty fish, egg yolks, UV-treated mushrooms and fortified products contribute to the supply, but rarely cover the entire requirement.

👉 That's why it's useful to know your vitamin D levels. A vitamin D self-test will give you quick and reliable certainty.
You can find more practical checks in the self-test overview or generally on the MyBodyX homepage .