Why does our hair go grey as we get older?

Answer 1

Actually it does not go grey, it becomes clear due to a lack of pigmentation. It appears grey, due to the reflection of light from the hair.

Answer 2

A change in hair color typically occurs naturally as people age, usually turning their hair from its natural color to grey, then to white. More than 40 percent of Americans have some grey hair by their fortieth birthday, but grey hairs can appear as early as the teens and twenties for some, or even in childhood. The determination of when someone begins greying, whether it comes with aging or prematurely, seems to be almost entirely based on genetics. Sometimes people are born with grey hair because it is passed down genetically. Many people use hair dye to disguise the amount of grey in their hair.

The change in hair color is caused by the gradual decrease of pigmentation that occurs when melanin ceases to be produced in the hair root, and new hairs grow in without pigment. Two genes appear to be responsible for the process of greying, Bcl2 and Mitf. The stem cells at the base of hair follicles are responsible for producing melanocytes, the cells that produce and store pigment in hair and skin. The death of the melanocyte stem cells causes hair to begin going grey.

There are no special diets, nutritional supplements, vitamins, nor proteins that have been proven to slow, stop, or in any way affect the greying process, although many have been marketed over the years. This may change in the near future however. French scientists treating leukemia patients with a new cancer drug noted an unexpected side effect: some of the patients' pre-grey hair color had been restored

Answer 3

Hair gets darker just before the pigment producing cells die(dye) off.

Answer 4

It looses pigment

Answer 5

Because from the moment we are born we are decaying