Drew Barrymore on Connecting Her Past Substance Use to Her Mental Health Challenges: ‘Big Revelation’ (Exclusive)

At just 11 months old, Drew Barrymore was already center stage, on set as the baby star of a puppy food commercial. It was just the beginning of a life in the spotlight, one that came with its share of mental health and substance use struggles, known as co-occurring disorders.

“I was a child lost in a world of adult vices, trying to find my way back to innocence,” Barrymore, now 50, wrote in Wildflower, her 2015 New York Times best-selling book….