Vitamin D is an important nutrient that is essential to our health. It boosts immunity, keeps bones strong and skin healthy, stimulates cell growth, and helps create new hair follicles. You absorb vitamin D through sun exposure primarily, but you can take dietary supplements and eat certain foods to up your intake of the nutrient. A number of symptoms, such as hair loss, can occur when your body lacks the recommended amount of vitamin D. Vitamin D deficiency has been linked to alopecia. It’s r.