The perils of fame: struggling with painful pasts, overnight success and other demons, countless A-listers -- from former child stars like Lindsay Lohan to Oscar winners like Robert Downey Jr. -- have sought help at rehab. Click through to see more celebs who've gone to rehab
Courteney Cox's ex-husband entered rehab in 2011. Shortly after completing the program, the actor revealed to Oprah Winfrey he had his first drink of beer at age 4 and started stealing pot from his father at age 8.
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