What causes people to get grey hair?

And why do some get it at such a young age while others can *naturally* stay away from the grey hairs taking over till their 50's?What causes people to get grey hair?
There are cells at the base of the hair follicle that produce melanin, the same chemical/hormone/whatever that allows you to tan. The melan in the hair shaft is what gives its color. As we age, these cells produce less and less melanin. Without the melanin the hair appears white or grey. I assume the reason some people get grey hair so young is the same reason some people get wrinkles younger than others: environmental exposure to who knows what, genetics, etc. Hope this answered a little bit of your question.What causes people to get grey hair?
one thing is ageing! bcoz of that people get grey hair over till their 50's! and for people in young age - they do not eat the nutritional things necessary for really healthy and black and shiny hair! that is it! hmmm... some people say eating green chillies and red chillies makes ur hair really healthy,black and shiny and also lets the hair be grey after a real long time!
hey hiieee kate.......... the reasons for premature greyin of hair can be due to Faulty hair...mental worries and lack of vitamins....sometimes it can be hereditary.....or due to unclean condition of scalp.


sometimes the surrounding also matters the most...if u stay in a polluted area or so.....it equally affect the hair causing various problems such as greyin of hair.....hair breakage....dry hair.....and so on


some of the remedies that i can help u with can be: maintaining a nutrient rich diet....Aviod devitalizing foods, soft drinks etc.Massage your scalp with coconut based hair oil atleast thrice a week.....and Rub Indian gooseberry ( also known as Amla ) into the scalp regularly.


If still u feel that these tips are nt helpin you much....u may visit the link http://healthyhaircareonline.com/


Dr. Aparna Santhanam (Dermatologist%26amp; hair specialist) will surely give u her expert tips for ur hair problem....!!!!
typically heredity and genes are the main factors as to why the hair greys when it does... but the actual process is you start losing the color melanin in your hair...leaving it empty..and when it empties..it leaves the hair looking grey with a slick, shiny, wirey, feel to it...
its a loss of the pigment melanin in the hair. its natural, everybody is different, so people grey at diff times. its natural and cant be avoided, but only covered up
It can be a combination of things.


Stress is a big key factor. Sometimes it's in your genes. If you want to get rid of gray hairs, go to a hair salon and have them dye your roots. =]
Age, worrying, stress - chemicals used in our hair and sometimes sickness or hereditary genes.
Grey hair is caused when the things in your hair that give it colour, die off and grey hair starts to grow.
The cells containing the pigment (i.e. the colour of any hair) slowly die as you get older, meaning that there is less colour until it turns completely gray.
-old age


-genetics
stress, genetics, and aging.
Genetics or Old Age.
I guess it's genetic. I'm 33 and have plenty.
your body stops producing the pigment that is needed for that hair color.
idk but when they get old they get grey hair.
children...children cause gray hair!!!
madness
Aliens. You never know who they are going to strike next.