Vitamin D is essential for healthy hair growth, and its deficiency can lead to hair loss and other hair problems. Vitamin D stimulates the growth of hair follicles, and when the body does not have enough, the hair can be affected. People concerned about hair loss related to vitamin D deficiency should see a doctor, who will likely suggest supplements, dietary changes and spending more time outdoors to help combat the deficiency. Vitamin D deficiency may also be related to alopecia areata, an autoimmune condition that causes hair loss in patches.
New follicles can help hair maintain thickness and prevent existing hair from falling out prematurely. While vitamin D deficiency is mainly related to mood, bone health, and the overall immune system, aesthetic dermatologist Michele Green says it also plays a role in hair health (and loss). Being deficient in vitamin D increases the chance that people will experience hair loss and many other problems. In addition to the most common causes of hair loss, Green says that living in a physically toxic environment can also cause hair loss.When the body doesn't have enough vitamin D, the keratinocytes in the hair follicles have trouble regulating hair growth and hair loss.
Research shows that people with alopecia areata have much lower levels of vitamin D than people who don't have alopecia.The Endocrine Society recommends that adults between 19 and 55 years old get 600 IU of vitamin D a day. This amount of vitamin D can help stimulate new and old hair follicles, preventing delays in new hair growth. It is important to note that while there is evidence linking vitamin D deficiency to alopecia and other forms of hair loss, it is not a definitive cause. If you are concerned about your vitamin D levels or your hair health, it is best to speak with your doctor.