Depression and anxiety lead LeAnn to seek help at a treatment facility in 2012.
Zac Efron revealed he went to rehab in 2013 for a problem with drugs.
Gerard Butler did a stint at Betty Ford in 2012.
Real Housewives of Beverly Hills star Kim Richards checked in in 2011 to deal with issues with alcohol.
Kelly Osbourne admitted in 2013 that she has gone to rehab seven times.
Mischa checked into rehab following a public DUI. Her career went downhill fast after The OC.
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