Celebrities who have been to rehab

Slideshow posted in Photos | Wednesday, December 01, 2010

30 of 48: A.J. McClean from the Backstreet Boys said on Jan. 13, 2011 that he had checked into a rehab center. He did not specify his ailment. McClean began treatment programs in 2001 and 2002 for alcohol abuse, depression and anxiety. (Pictured: A.J. McClean appears in concert in a 2010 photo posted on his website. (ajmclean.com)