Medications and vitamins: Cancer chemotherapy, which attacks hair follicles in its attempt to kill all fast-growing cells around the body, is a well-known reason for hair loss. Other medications’ side effects include hair shedding as well, such as some that treat high blood pressure and gout (a painful joint condition caused by a buildup of uric acid). Excessive levels of vitamin A also contribute.
Nutritional deficits: Heavy dieting or eating disorders such as bulimia and anorexia can temporarily stun hair follicles to cease growth. This can also occur from insufficient protein, vitamin or mineral intake.
Aging: A natural effect of growing older is slowed hair growth.
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