what vitamin deficiency causes hair loss

Hair loss can be caused by various factors, including genetics, hormones, stress, and poor nutrition. Vitamin and mineral deficiencies have been linked to hair loss, and the most common deficiencies are iron, vitamin D, and zinc. Vitamin B12 deficiency is also often thought to be one of the causes of hair loss. However, of all the nutrients and B vitamins, the one most commonly connected with hair loss is biotin. Although vitamin C deficiency is typically associated with body hair abnormalities, there are no data correlating vitamin C levels and hair loss. Deficiencies in vitamins A, B, C, D, and E, as well as iron and zinc, have been associated with hair loss. Some research suggests that symptoms of a common form of alopecia may be more severe in people with low levels of vitamin D. If you notice your hair is losing its luster, or even shedding more than usual, there’s a chance a vitamin deficiency is to blame. While most hair loss is genetic, vitamin deficiencies can cause hair loss or worsen existing hair loss.