6 of 48:
Country singer Mindy McCready underwent rehab multiple times in her life to treat substance abuse and emotional issues and also appeared on 'Celebrity Rehab With Dr. Drew' in 2010. She died on Sunday, Feb. 17, 2013, at a residence in Herber Springs, Arkansas, from an apparent self-inflicted gunshot wound. She was 37. Check out more details here.
(Pictured: Country singer Mindy McCready appears in a December 2011 interview for ABC's '20/20.')