Vitamin D & obesity: Who affects whom?

from Mag. Margit Weichselbraun
on 02.10.2025
A person stands barefoot on a digital scale. Only the person's feet and part of the white fabric of their pants leg are visible. The floor is wooden, and the lighting in the room is soft.

Are you familiar with the chicken-and-egg dilemma? That's exactly how the discussion surrounding vitamin D and obesity feels. Which comes first: low vitamin D levels or those extra kilos on the scales?

Science has a pretty clear opinion on this: in general, obesity is the cause – not the consequence – of low vitamin D levels. Why? Quite simply: with a higher body weight, the sun vitamin is distributed over a larger volume. At the same time, part of it is stored in fatty tissue – and is no longer directly available to the body. The result: vitamin D levels drop.

Anyone hoping to lose weight faster with vitamin D capsules is likely to be disappointed. Studies show that supplementation alone has no significant effect on weight loss. However, vitamin D does play a role in processes related to obesity. Researchers are observing possible links with fat cell formation, their maturation and the hunger and satiety hormone leptin. Sounds promising? Yes. But research is still in its infancy.

What does this mean for you? Quite clearly: if you have a higher BMI, you should keep a close eye on your vitamin D intake. Because well-stocked reserves are not only important for general well-being, but could also be a crucial link between obesity, inflammatory processes in the body and possible secondary diseases.

At BIOGENA, we say: Well nourished is better equipped. Let's take a look at your vitamin D levels together – for a balance that is worth seeing.

biogena-line
bestseller
Vitamin D3 drops
Pure Vitamin D3 with high-quality sunflower oil – in easy-to-use drops
Buy vitamin D drops
€19.90
Vitamin D3 Tropfen

Source:

Karampela, I. et al. 2021. Vitamin D and Obesity: Current Evidence and Controversies. Curr Obes Rep;10(2):162-180. https://pubmed.ncbi.nlm.nih.gov/33792853/

More articles
Ginseng
Ginseng: Benefits, effect & side effects
Ginseng is one of the oldest and most popular medicinal plants in the world. Its adaptogenic properties, which help the body to cope with stress, and its varied health benefits make it an indispensable part of traditional medicine. In this blog...
Hyaluronic acid powder: key benefits for skin, face and well-being
Hyaluronic acid is one of the brightest stars in the anti-aging sky. But how does this substance work? And what can be expected from targeted intake? We explain this and more in this blog.
The gut-skin axis: how gut health and skin are connected
What do your gut and skin have in common? Quite a lot! Both are densely populated microbiome worlds – and key players in your well-being. Around one trillion microorganisms live in every gram of tissue in your large intestine. And your skin is...