Vitamin D as the sunshine vitamin: A comprehensive guide
Vitamin D is often called the " sunshine vitamin ." In recent years, it has gained increasing importance in the health world—and for good reason. It is an essential vitamin that plays a central role in numerous bodily processes . Despite its significant function, however, vitamin D is very often underestimated. This can have serious health consequences.
Many people associate vitamin D with sunshine and summer holidays . But what happens when there's no sun or when the body can't properly absorb the vitamin? A vitamin D deficiency can lead to fatigue, low mood, and serious bone diseases.
But how do you recognize deficiency symptoms , and are there perhaps foods that contain vitamin D and are suitable for a low-histamine diet? You can find all the important information about this and much more about vitamin D in the following blog article.
General information: What you should know about the sunshine vitamin
Vitamin D, on the other hand, can be produced by the body itself with sufficient sun exposure. Diet is generally only responsible for about 10-20% of our needs. Our body requires the sun's UV-B rays to produce vitamin D. These rays enable our skin to produce this "sunshine vitamin."
Vitamin D has the following functions in our body:
- It contributes to the normal function of the immune system.
- It contributes to the maintenance of normal muscle function
- It contributes to the maintenance of normal bones and teeth.
- It has a function in cell division
- It contributes to normal blood calcium levels.
- It contributes to the normal absorption/utilization of calcium and phosphorus.
Signs and causes of vitamin D deficiency
If you spend a lot of time indoors and also stay in Germany during the winter , you can assume that a vitamin D deficiency is very likely.
Our modern lifestyle could possibly be a reason for the shortage in an entire population , as most people spend their lives indoors due to work and hobbies .
As mentioned above, the situation is even more difficult in this country during the winter months . At our latitudes , the sun's rays are unfortunately far too weak in winter to adequately supply the body with vitamin D.
Furthermore, certain diseases can also be responsible for a vitamin D deficiency.
Vitamin D deficiency: These are the reasons for an increased risk
- insufficient sun exposure
- Impaired utilization and absorption of vitamin D (for example, in chronic inflammatory bowel diseases or celiac disease )
- Malnutrition
- increased need in various life situations such as pregnancy, breastfeeding or in children
- Taking certain medications
- Increased excretion of vitamin D via the kidneys
Symptoms: How to recognize the first signs
- Bone and joint pain
- weak immune system
- fatigue
- impaired performance
- Periodontitis
- Muscle weakness
- hair loss
The good news is: If a vitamin D deficiency exists, it can be corrected within 2-3 months with regular intake.
Can vitamin D deficiency be corrected through sunlight?
One of the most natural ways to obtain vitamin D is through exposure to the sun's ultraviolet light. However, skin type plays a crucial role. To absorb sufficient vitamin D, people with fair skin need to stay in the sun for 5-20 minutes , while those with darker skin need 15-25 minutes .
The following is important to note: The UV-B rays , which are responsible for absorption, are inhibited by sunscreen and clothing, among other things.
Vitamin D: How much does the body need?
Vitamin D requirements are often also given in international units (IU):
- 10 µg corresponds to 400 IU
- 20 µg corresponds to 800 IU
This is the significance of the vitamin D level in the blood.
- Adequate supply: at least 20 ng/ml
- Suboptimal supply: 12 ng/ml to 20 ng/ml
- Inadequate supply: below 12 ng/ml
Vitamin D stores: Is the summer sufficient for adequate supply?
Sunlight on the skin not only feels good, it is also – in moderation – healthy and necessary.
But does our body also have a vitamin D reserve that it can draw on to prevent a deficiency in the long term ? Unfortunately , the answer is disappointing: No.
Even if you spend a lot of time in the sun during the summer and replenish your body's reserves, unfortunately it will not be enough for a whole year.
A special combination: Vitamin D3 and K2
As mentioned above, vitamin D is not only involved in bone formation , but also contributes to normal muscle function . Vitamin K plays a role in vitamin D metabolism at many points and is therefore essential for optimal effectiveness.
Low-histamine foods with vitamin D
Vitamin D is barely present in food . In plant-based foods, the vitamin D content is even lower than in animal-based foods. Consequently, the need for vitamin D is even higher for people who follow a vegan diet.
The following low-histamine foods contain small amounts of vitamin D:
- egg yolk
- Mushrooms (1)
- Salmon (frozen or freshly caught)
- yogurt
- Milk
- Sweet potatoes
Conclusion
Vitamin D, often called the " sunshine vitamin ," is essential for numerous bodily functions , from bone health to supporting the immune system. A vitamin D deficiency can have serious health consequences, especially during the months with less sunshine.
Since our bodies produce vitamin D through sun exposure , it's difficult to get enough of it in winter. When sunlight is scarce, taking vitamin D supplements , which also contain vitamin K , can be an effective solution.
To stay healthy in the long term and prevent deficiencies, it's important to regularly check your vitamin D levels and, if necessary, supplement them. This way, you can ensure you're optimally supplied even during the darker months.