What is the difference between vitamin D and vitamin D3?

Vitamin D is often called the ‘sunshine vitamin’, and for good reason. Did you know that your body produces this vitamin when exposed to sunlight? But there is so much more to discover about vitamin D: from the different forms such as D2 and D3, to the ways in which this vitamin contributes to strong bones and teeth. In this article, we dive into what vitamin D is, how to get enough of it, and why vitamin D3 is particularly preferable if your body wants to get the most out of this sunny vitamin.

In this article, you will read:

• What vitamin D is exactly and why you need it
• The difference between vitamin D2 and D3
• How to get enough vitamin D

In short: Vitamin D

Vitamin D is a fat-soluble vitamin that is important for various processes in our body. It is best known as the “sunshine vitamin” because it is produced by our skin when exposed to sunlight. Vitamin D helps the body absorb minerals such as calcium and phosphorus, which are essential for strong bones and teeth. It also plays an important role in supporting the immune system and maintaining energy levels.

There are five forms of vitamin D, called D1 to D5. For humans, vitamin D2 (ergocalciferol) and vitamin D3 (cholecalciferol) are particularly relevant. Vitamin D3 is produced in our skin after exposure to sunlight and is better absorbed by the body than D2. The other forms, such as D1 and D4, are hardly used, while D5 is a synthetic variant that is mainly used in research.

What is the difference between vitamin D2 and vitamin D3?

The main difference between vitamin D2 (ergocalciferol) and D3 (cholecalciferol) lies in their origin and effectiveness.

• Vitamin D2 (ergocalciferol): is plant-based and found in mushrooms such as shiitake and button mushrooms, which, like humans, produce vitamin D through sunlight (UV light). Vitamin D2 is mainly used in vegetarian supplements, but it is less well absorbed and converted by the body than vitamin D3.
• Vitamin D3 (cholecalciferol:) is a form that the body produces itself through the skin and is also found in animal products such as fatty fish, meat, eggs and baking and frying products. However, vitamin D3 is also found in some plant-based products: algae and lichen are an ideal solution for vegans.

The most important source of vitamin D is its production in our skin through sunlight. To produce sufficient vitamin D, it is essential to spend about 15-30 minutes outside in the sun every day between 11:00 and 15:00 with uncovered skin (such as hands, arms or face).

A handy way to check whether you are getting enough vitamin D3 from the sun: if your shadow is longer than your height, the sun is not strong enough and it is better to get vitamin D3 from food or supplements.

Food sources often contain only small amounts, even if you eat animal products, so in addition to sunlight, a supplement is sometimes necessary to reach the recommended daily amount.

Why is vitamin D3 better than D2?

It was long thought that vitamins D2 and D3 had the same effect, but we now know that vitamin D3 works better for the body. Here are some differences:

• Faster absorption: Vitamin D3 is converted more quickly in the body than D2.
• Better storage and stability: D3 increases vitamin D levels more effectively and is retained in the body for longer.
• More efficient binding with proteins: Vitamin D3 forms stronger bonds with blood proteins, which improves its availability.
• Long-term storage: D3 can be stored better than D2, which contributes to a stable supply in the body.

What is the difference between vitamin D and vitamin D3?

Vitamin D is a collective name for different forms of this vitamin, including vitamin D2 and vitamin D3. Although both forms provide vitamin D, they differ mainly in how the body absorbs and uses them.

Vitamin D3 is absorbed more efficiently by the body and converted into its active form than vitamin D2. This means that D3 enters the bloodstream faster, binds better to transport proteins and remains in the body longer.

Vitamin D2 is less well absorbed and broken down more quickly, making it less effective at increasing and maintaining vitamin D levels.

Therefore, vitamin D3 is usually the best choice for supplementation, as it better supports the body in obtaining and retaining sufficient vitamin D.

Conclusion

Vitamin D is essential for our health, but unfortunately, we do not always get enough of it. Vitamin D3 is distinguished by its better absorption, longer storage and more efficient action than vitamin D2. This makes vitamin D3 the preferred form in supplements, especially for people who want to effectively support their vitamin D levels.

Whether you choose sunlight, food or supplements, it is important to be aware of these differences in order to reap the maximum benefits of vitamin D and get enough of it!