Yes, vitamin D deficiency can cause hair loss. Vitamin D is essential for several bodily functions, including healthy hair growth. It helps regulate the production of keratin, a protein that is essential for healthy hair strands. Vitamin D deficiencies can lead to weakened hair follicles and hair loss.
Vitamin D deficiencies are becoming increasingly more common, particularly among those who live in northern latitudes, those who work indoors, and those with darker skin, as these factors can limit or prevent the body’s ability to absorb enough sunlight to create its own vitamin D. Other causes of vitamin D deficiency can include certain medical conditions, such as celiac disease, and dietary deficiencies.
The most common symptom of vitamin D deficiency-related hair loss is diffuse hair shedding, which is characterized by increased shedding across the scalp, rather than localized areas of bald patches. Additionally, if you have vitamin D deficiency, you may experience other hair-related issues, such as dryness, thinning, and breakage.
If you suspect you may have a vitamin D deficiency, it’s important to speak with your doctor. The most effective way to diagnose a deficiency is through a simple blood test, which your doctor can provide. Depending on the severity of the deficiency, your doctor may recommend dietary changes, supplements, or more sun exposure to correct the deficiency and, in turn, help reduce hair loss.