CELEBRITY
02/06/2014 04:35 pm ET Updated Feb 06, 2014

Celebrities Who've Opened Up About Drug Addiction

TORONTO, ON - SEPTEMBER 09:  Actors Jonah Hill, Brad Pitt and Philip Seymour Hoffman speak onstage at 'Moneyball' Press Confe
TORONTO, ON - SEPTEMBER 09: Actors Jonah Hill, Brad Pitt and Philip Seymour Hoffman speak onstage at 'Moneyball' Press Conference during 2011 Toronto International Film Festival on September 9, 2011 in Toronto, Canada. (Photo by Jason Merritt/Getty Images)

Philip Seymour Hoffman's tragic death sparked a conversation about celebrities and their personal struggles with addiction.

Hoffman was found dead of an apparent heroin overdose on Sunday (Feb. 2) in New York City after years of battling his addictions. He struggled with substance abuse in his twenties, but remained sober for over two decades before relapsing last year. Hoffman checked into rehab in May 2013 to deal with abuse of prescription pills and heroin.

Demi Lovato, who went to rehab in 2010, spoke out shortly after hearing of Hoffman's death, telling "Extra," “People don’t take it as seriously as it really is, it’s a mental illness and it’s a disease … There’s no pill that’s gonna change it. People need to have compassion for it."

"Being a former addict looking at it as I had a choice, because at some point in my disease I didn’t, I physically and emotionally couldn’t live without it," Lovato, who struggled with a cocaine addiction, continued, "that was my medicine to my pain.”

Here are other stars who've opened up about their addictions:

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