Celebrities who have been to rehab

Slideshow posted in Photos | Wednesday, December 01, 2010

23 of 48: Whitney Houston died on Feb. 11, 2012 of accidental drowning, combined with cocaine use and a pre-existing heart condition. She was found unconscious and underwater in a bathtub in a room on the fourth floor of the Beverly Hilton hotel in Beverly Hills, California, by one of her associates.

The singer had struggled with drug and alcohol abuse for years. In May 2011, she relapsed and began an out-patient rehab program for drug and alcohol treatment.

Houston underwent treatment for substance abuse in 2004 and in 2005. Several years earlier, she told ABC News' Diane Sawyer in an interview that would spur a slew of online and late-night jokes: 'Crack is cheap ... We don't do crack. Crack is whack.'

Houston told Sawyer that she has used alcohol, marijuana, cocaine and prescription drugs at different points during her career.

In 2000, the singer was detained at a Hawaii airport after a security guard said some 15 grams of marijuana were found in her purse. The drug possession charge was later dismissed.

(Pictured: Whitney Houston performs on 'Dancing with the Stars: The Results Show,' Tuesday, November 24, 2009.) (ABC Photo / Adam Larkey)