It is a fact that as one grows older, the number of gray hairs on his head are likely to increase as well. This is part of the natural aging process. However, there are people who are actually experience graying hair even when they are still pretty young. Stress, health issues, and such other related problems may have triggered their premature appearance. They can be quite embarrassing too, so you would want to find the necessary treatment to get them addressed as soon as you can.