1. Brad Pitt
Brad Pitt has revealed he spent a year in Alcoholics Anonymous following his divorce from Angelina Jolie and that he has "removed" his "drinking privileges" as a result. The Once Upon a Time in Hollywood star told The New York Times, “I had taken things as far as I could take it, so I removed my drinking privileges.” He then went on to explain what AA was like: “You had all these men sitting around being open and honest in a way I have never heard. It was this safe space where there was little judgment, and therefore little judgment of yourself.”
In May 2017, Pitt admitted to GQ that he couldn't remember a day "since college" when he hadn't smoked marijuana. "I was boozing too much. It’s just become a problem", he said. "I can’t remember a day since I got out of college when I wasn’t boozing, or had a spliff, or something," he said. "I mean, we have a winery. I enjoy wine very, very much, but I just ran it to the ground. I had to step away for a minute."
He continued, "Truthfully, I could drink a Russian under the table with his own vodka. I was a professional. I was good."
2. Demi Lovato
Demi Lovato has always been brutally honest with her fans about all aspects of her life, especially her addiction. In her 2017 documentary, Simply Complicated, the 25-year-old singer shed light on the depth of her fight with substance abuse and her multiple health disorders.
"I wasn't ready to get sober", Demi says of her 2012 relapse. "I was sneaking [cocaine] on planes, I was sneaking it in bathrooms, sneaking it throughout the night... I went on a bender of like, two months, where I was using it daily.
"I would sneak out and get drugs, I would fake my drug tests with other people's was one night when I used a bunch of coke and I popped a few Xanax bars, and I began to choke a little bit. My heart started racing, and I thought to myself, 'Oh my God, I might be overdosing right now.'"
Earlier this year Lovato celebrated six years of sobriety, however, has relapsed since.
3. The Weeknd
Before finding fame Abel Tesfaye - aka The Weeknd - admits he found comfort in drugs such as Ketamine, cocaine, MDMA, mushrooms and cough syrup as a way to escape the reality of his childhood.
“When I had nothing to do but make music, it was very heavy. Drugs were a crutch for me," he told The Guardian. "There were songs on my first record that were seven minutes long, rambling – whatever thoughts I was having when I was under the influence at the time. I can’t see myself doing that now.”
4. Lady Gaga
Lady Gaga has never been shy about her drug use, often admitting that she has been “addicted to various things" since she was young. After undergoing surgery in February 2013 to treat damage to her cartilage, the singer admitted she became addicted to marijuana, smoking 15 to 20 cigarettes a day with no tobacco, in order to alleviate the pain from her hip injury.
“I was living on a totally other psychedelic plane, numbing myself completely, and looking back I do see now that some of it had to do with my hip pain", Gaga told the Elvis Duran and The Z100 Morning Show.
"I didn’t know where the pain was coming from so I was just in a lot of pain and very depressed all the time and not really sure why.”
5. Zac Efron
When Zac Efron was admitted into rehab back in 2013, many of his fans were surprised to learn that he was battling with secret drug addiction. In recent years the High School Musical heartthrob has admitted that he found it difficult to cope with the media intrusion and turned to cocaine and alcohol in order to deal with public life. Efron revealed to Hollywood Reporter in May 2014 that the pressures of fame meant he avoided hobbies that he normally enjoyed for fear of being followed by members of the public.
"I was drinking a lot, way too much. It's never one specific thing. I mean, you're in your 20s, single, going through life in Hollywood, you know? Everything is thrown at you. It's a never-ending struggle, [but] I just started going [to counselling]. And I think it's changed my life. I'm much more comfortable in my own skin. Things are so much easier now."
6. Drew Barrymore
In an interview in December 1990, Barrymore revealed she was as young as 10-years-old when she first dabbled in drugs.
"I wanted to try some. Eventually, that got boring, and my addict mind told me, Well if smoking pot is cute, it’ll also be cute to get the heavier stuff like cocaine. It was gradual. What I did kept getting worse and worse, and I didn’t care what anybody else thought."
7. Nicole Richie
Designer and reality TV star, Nicole Richie, confessed her dependency on drugs as a teenager in an interview with Dianne Sawyer in 2007.
"I kind of took matters into my own hands and was creating drama in a very dangerous way. At 18 I had just been doing a lot of cocaine."
"I, again, made the decision for myself, this is something I have to do. I have to get off drugs. This isn’t the life … this was heroin.”
In October 2012, the Black Eyed Peas singer shared the eerie details of her struggle with drugs, revealing it was once so bad she was “hallucinating on a daily basis.”
"From ecstasy it went to crystal meth", Fergie said on Oprah Winfrey's Next Chapter. "With any drugs, everything is great at the beginning, and then slowly your life starts to spiral down. [I was] 90 pounds at one point. What got me through it was a lot of therapy, soul searching, discovering why I took the drugs in the first place, because that’s really what it is."