What nutritional issues cause your hair to change color?

There are multiple nutritional deficiencies that can lead to hair discoloration, including: Protein deficiency: Hair is primarily made up of protein, so a deficiency in protein can lead to weak, brittle hair that can also change color to a lighter shade. Vitamin B12 deficiency: Vitamin B12 is essential for the production of red blood cells, which carry oxygen to the hair follicles. A deficiency in vitamin B12 can lead to a decrease in the production of melanin which can result in premature greying of hair. Iron deficiency: Iron is an important mineral that helps to carry oxygen to the hair follicles. Low iron levels can lead to anemia which may cause hair loss and a change in hair color such as a reddish or light brown hue. Copper deficiency: Copper is an essential mineral that helps to produce melanin, the pigment that gives hair its color. A copper deficiency can lead to premature graying of hair, as well as hair loss. Zinc deficiency: Zinc is a mineral that is essential for the production of keratin, a protein that makes up the majority of hair. A zinc deficiency can lead to weak, brittle nails, and hair that is prone to breaking. It may also cause hair loss and changes in hair color such as a silvery sheen.