Vitamin D - why is it related to the sun like everybody says?

Vitamin D is a fat-soluble vitamin. On one hand it gets into our system with the food we are eating and on the other hand, our bodies are able to produce vitamin D by themselves. For that cholesterol is transported into the skin and when sunlight hits our skin the production of vitamin D starts.

The fact that our body is capable of producing this vitamin on its own makes it technically a hormone.

The vitamin D production is very much dependent on the angle of incidence of the sun rays. According to this, the synthesis is only possible from April to September.

Functionality

regulates the entire calcium balance
vitamin D is the hormone that helps the gut to absorb more calcium
a lack of vitamin D can cause bone diseases for example osteoporosis
improvement of muscle strength
crucial for thyroid hormones
a positive influence of coronary blood vessels

A lot of people suffer from a vitamin D deficiency

The high numbers of deficiency are based on the fact, that the sun rays for more than 6 months of a year are not suitable for the vitamin D synthesis on our skin. And it doesn´t help that a lot of people are inside their houses or offices for the most part of the day. So there is big lack of sunshine!

People over 65 have a weaker vitamin D synthesis, it´s age-related and can´t be fixed with a higher amount of sun rays or more hours outside.

When you are using sunscreen it prevents sunburns by blocking UVB light. That means it also lowers vitamin D levels. Check this article I found …

People with darker skin tend to require more sun exposure. Melanin is the substance in the skin that makes it dark and lowers the vitamin D production. Regulating the intake of vitamin D with your nutrition gets more important.

Low levels of this nutrient occur when our body doesn´t absorb the necessary levels. The results can be misshapen or thin bones and also: