why do people get grey hair. Is it hormones or what. because i know this eight year old that has a big patch of grey hair on his head. My father started greying in his early thirties. what causes the hair to change its colour?
No obvious stupid answers like because of age please!
Answer:
the cells that produce the color in hair just don't work as well as they used to. These cells are called "melanocytes."
"Melanos" is a Greek word that means "very dark." "Cyte" comes from "kutos," which is Greek, too. It meant "a hollow vessel." Now it means cell.
Those melanocytes don't work quite as well as they used to because they're not getting as much of a certain hormone. That hormone has fallen off because of a decrease in another hormone.
Hormones, you may remember, are substances in the body that do a lot of different things. One thing they do is help you be either a boy or girl. Another thing, not quite so important, is stimulate the melanocytes to crank out pigment.
http://www.wsu.edu/druniverse/grayhair.h...
Grey hairs are caused by the genes in you immunity system. Some people have grey hair at the age of 30 or so. It Al's can contribute from stress
the hair colour is due to a pigment called melanin that is present in all skin cells to some extent. The darker the colour greater the pigment quantity. In certain conditions the cells lose the ability to manufacture this pigment and the hair then look white. This happens with age mostly but in some rare cases extreme shock can result in white hair. A genetic variation is the albino. The child you are talking about could have had mutated cells in the area of his skull so the cells there can not manufacture melanin the pigment
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