How is vitamin D synthesised?
Vitamin D is formed in the skin when it is exposed to sunlight, through ultraviolet B rays, which help synthesise vitamin D. These rays cannot pass through glass, clothing or sunscreen.
On the other hand, it can enter the body along with certain foods. First of all, these are fatty sea fish, fatty dairy products and egg yolks.
However, if you are deficient or insufficient in this vitamin, you cannot get enough of it from food or sunlight alone (on top of that, ultraviolet rays can also be dangerous). For example: the daily intake of vitamin D is contained in 20 egg yolks. Therefore, taking vitamin D supplements is the best option in case of deficiency or insufficiency.
Furthermore, in practice, milk and dairy products do not always contain vitamin D or contain only its insignificant traces, so their consumption, unfortunately, cannot guarantee the coverage of our needs for this vitamin.
Why is it a good idea to try and avoid vitamin D deficiency and insufficiency?
The main function of vitamin D is to regulate the metabolism of calcium and phosphorus. It helps the absorption of these elements from the intestines, thus participating in the growth and maintenance of bones and skeleton. If this vitamin is lacking in the body, a person can develop rickets and osteoporosis.
On the other hand, in almost all organs and tissues, there are receptors for vitamin D. Therefore, it has a large number of functions not only related to the development and growth of bones.
It also plays a role in the development of the nervous system. With its deficiency, sleep disturbances and cognitive disorders such as memory impairment can occur. In adults, it can contribute to the development of Alzheimer’s and Parkinson’s diseases, or senile dementia.
In many cases, people with vitamin D deficiency are at increased risk of developing cancer, cardiovascular diseases, infectious diseases, and many others.
Its deficiency is also one of the factors that increase tissue resistance to insulin, contributing to the development of diabetes. This prohormone is also a powerful agent for reducing chronic inflammation.
Some peculiarities to take into consideration.
Elevated vitamin D levels can lead to functional vitamin K2 deficiency. In this case, since vitamin K2 regulates calcium transport, calcium does not reach the bones and is deposited in the arteries and soft tissues, which can lead to hardening of the arteries.
So, if you take vitamin D, you create a higher demand for vitamin K2 in your body. Both vitamin D and K2 work together to strengthen your bones and improve the health of your heart. Therefore, if you are taking vitamin D via supplements, you also need to intake extra vitamin K2.