What causes gray hair?

[Marasmus]

Why do people get gray hair even when very young?

[Marasmus]

Why do people get gray hair even when very young?

[sappyconifer]

Some people are genetically predisposed to premature graying. Most people begin to see some gray hairs between age 35-50. Some are fully gray by 50, some haven't a gray hair at that age. It's mainly determined by genetics, but it has been said that lack of some of the B vitamins, iron, copper, and iodine in the daily diet is said to be a contributory factor.

[Still Learning]

Sometimes a severe illness, or treatment/medications for an illness can cause early graying, as well as STRESS. Probably because of the body using up the things that sappy connifer mentioned.

[Sugarpuff]

I think gray hair is the result of the joy one has when the realize they are not going to lose their hair.