Why peoples hair black in colour and why it is white some time?

Human beings have many variations in hair color and hair texture.

Hair color is the result of pigmentation due to the presence of the chemicals of melanin. In general, the more melanin, the darker the hair color.

Effects of aging on hair color

An elderly man from Sa Pa, Vietnam with grey hairA change in hair color typically occurs naturally as people age, usually turning their hair from its natural color to gray, then to white. More than 40 percent of Americans have some gray 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 graying, whether it comes with aging or prematurely, seems to be almost entirely based on genetics. Sometimes people are born with gray hair because it is passed down genetically.

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.[2]

There are no special diets, nutritional supplements, vitamins, nor proteins that have been proven to slow, stop, or in any way affect the graying 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-gray hair color had been restored. [1]

Many people use hair dye to disguise the amount of gray in their hair.

Why peoples hair black in colour and why it is white some time?

Black / Young, White / Old.......

Why peoples hair black in colour and why it is white some time?

Black hair changes with time, it turn white/grey/silver. Choose your own adjective. It's a natural process.

Why peoples hair black in colour and why it is white some time?

who know maybe who evers hair is black there goth or lost a very special person and white i dont know but vote me best answer!!!!!!!!!

haha hope i helped ya out

Why peoples hair black in colour and why it is white some time?

people have a pigment in their hairs called melanin which is exhausted as the age goes by.The best thing to maintain the black hair is to have a lot of antioxidants present in your diet which is present in fruits and vegetables (having colours)