Vitamin D and your hormones

There is a lot of talk about the impact of vitamin D’s impact on the health and functioning of the body. As it turns out, it also affects the hormonal balance of women of reproductive age. The research taken by scientists from Germany has shown a strong link between vitamin D levels and hormone levels, including those responsible for the cycle.

Vitamin D deficiency is quite common in women of reproductive age. Especially in inhabitants of these geographical areas where there is less sunlight. The research conducted earlier on animal models confirmed that there is a strong correlation between vitamin D and sex hormone production. The German researchers decided to see if similar mechanisms also occur in humans.

The study involved 351 healthy Caucasian women of reproductive age (mean age 28 years). Their blood samples were analyzed for hormonal, hematological and biochemical parameters, as well as vitamin D levels (total and free 25(OH)D). The study showed a clear correlation between vitamin D levels (total and free 25(OH)D) and hormone levels including androgens (FAI), LH, AMH, testosterone, TSH and SHBG. These are associated with normal cycle progression and oocyte quality.

As it turns out, vitamin D may play an important role in regulating fertility in women. Scientists are of the opinion that its low level may increase the risk of complications during pregnancy and may be associated with the development of various diseases such as endometriosis or polycystic ovary syndrome. Preceded by testing and individual medical evaluation, taking vitamin D supplements can have a beneficial effect on your chances of getting pregnant. In particular, it may be applicable to the treatment of conditions such as PCOS or thyroid disease.


Adequate diet and sun exposure are natural forms of taking care of adequate vitamin D levels. Do your research and talk to your doctor about what dosage is best for you before you start taking supplements.