Manage stress: You ask about vitamins - the primary vitamins that have been cited as necessary to prevent gray hair are b-vitamins - b12, folate (folic acid) and biotin in particular. In my experience, the best gray hair prevention is stress management however. Learn how to not get frazzled. Meditate, do yoga, exercise, get enough sleep. Eat a healthy organic diet with lots of fruits and veggies. Don't go to med school.
Answered 2/23/2013
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