6. Jodie Sweetin
You might recognize her as adorable Stephanie Tanner on the show Full House, but Sweetin started to spiral out of control shortly after the show was cancelled. She has admitted to being addicted to coke, ecstasy and even crystal meth in her past. In 2009 she released a memoir titled unSweetined outlining her struggle with meth and alcohol and how she got clean after she publicly announced her sobriety.