Lisa Robin Kelly – 43 (1970 – 2013)

There’s always an explanation as to why a person develops a drinking problem, and in Lisa Robin Kelly’s case, it was a miscarriage. As a result of her frequent intoxication, the actress was written out of the sitcom that made her famous, That’s 70s show.

After leaving the program in season three, the star returned for a few episodes in season five before finally being relieved and replaced by another actress. Unfortunately, Kelly encountered several problems before her early demise, and her last known photo was from apprehension by authorities. While she was checked into a rehabilitation center, she passed away from multiple substance intoxication while sleeping.