Luscious Hair Need Nutrients

Could a crash diet cost you your hair? In extreme cases, it could. Your hair needs protein and iron to stay healthy, along with omega-3 fatty acids, zinc, and vitamin A, but not too much -- which can promote hair loss. Very low-cal diets are often lacking in sufficient nutrients and can stunt hair growth or leave hair dull and limp. If the nutritional deficiency is big enough -- like for someone with an eating disorder -- hair can fall out.