john1007 I know someone like that but instead of caffeine it was nicotine. A girls mother I knew years ago let her smoke from the age of 12 and up, the mother ended up dying of lung cancer too, then the girl quick years ago after also having to bury her dad. Sad story but sometimes parents are not always thinking about being parents, they care more about being the child's friend. C affine is just like nicotine, its a drug.