Yes it started when I was 5 years old, I lost my second tooth, I swallowed it, I was so panicky and worried about the fact that the tooth fairy was not going to come cause I had no proof of a tooth that came out. It took so much conviencing on my parents part so that I would not worry so much about this issue. Then after that my anxiety build (over a lot of other things) like a huge thunderstorm. I really think that is why I started graying at 18 years old......