- Hair turns gray when there is a decrease in the number of stem cells in hair follicles. According to Emi Nishimura of Tokyo Medical and Dental University in Japan, cells called melanocytes, which give color to your hair, become damaged or die, causing your hair to turn gray.
Learn how to handle stress, a possible cause of gray hair. Tyler Cymet, head of family medicine at Sinai Hospital in Baltimore, suspects that going gray is "genetically outlined, but stress and lifestyle give you variation of plus or minus five to 10 years."
Quit smoking. Smokers are four times more likely to have gray hair than nonsmokers. Smoking also speeds up hair loss once that process has begun.
- According to Alan Greene, M.D., gray hair in young people usually happens because there's a lack of nutrition in their diets. A vitamin B-12 deficiency is commonly cited as a cause for premature gray hair. Get your child's blood tested if he has gray hair. It could be genetic or a B-12 deficiency. Understand you can help keep your hair from turning gray or slow it down by taking certain vitamin supplements. Eat foods high in these vitamins also for darker hair
Read more: Vitamins That Prevent Gray Hair | eHow.com http://www.ehow.com/about_5497561_vitamins-prevent-gray-hair.html#ixzz2LXTPfF8V