14. Corey Haim
20th Century Fox/Courtesy Everett Collection / Joey Foley/FilmMagic
A teen idol in the 80’s, Haim went off the rails at the age of 15. He used heavy drugs for most of his life and was in rehab 15 separate times. Haim – who once admitted to taking 85 Valium pills a day – relapsed for a final time in 2010 when he died of an overdose at age 38.