Is it normal for the elderly to have white hair and black hair?

This is not normal. It may be because of the formation of melanin in the body, and the white hair turns black. It may also be a signal of disease in the body, usually caused by insufficient nutrition. Just need to give nutritional support.

1, black sesame: Black sesame contains unsaturated glycerides such as linoleic acid and palmitic acid, which prevents hair from being brittle, dry and easily broken, thus playing a role in hair care. It has a good therapeutic effect on premature gray hair.

2, carrots: an important source of human vitamin A, vitamin A can promote the health of the scalp and make hair shiny.

3, extra thick nutrients: it is a normal metabolic state for the human body to grow white hair occasionally. Usually, you can eat extra-concentrated nutrients, replenish nutrients to your hair, prevent white hair from growing, and insist on taking it to grow new black hair.

4. Eggs: One of the easiest ways to get protein in daily life. Eggs are rich in vitamin B 12 and vitamin H, and are important nutrients for beauty and hair care.

5, Polygonum multiflorum Thunb: Regular consumption can make hair black and skin shiny, because Polygonum multiflorum Thunb is rich in lecithin, iron, manganese, calcium, zinc, starch, fat and other elements, which has the effect of nourishing liver and kidney and benefiting essence and blood.

6. Lycium barbarum: It can promote cell generation, tender skin, improve eyesight and blacken hair, because Lycium barbarum is rich in carotene, vitamin B 1, vitamin B2, vitamin C, nicotinic acid, linoleic acid, iron and other elements.