The 28-year-old has spoken about the ways her eating disorder led up to the overdose, but she's never gone into detail publicly about that night.
Well, the trailer for her four-part YouTube documentary series, Dancing with the Devil, dropped today. And she's breaking that silence.
"Any time that you suppress a part of yourself, it's gonna overflow," Demi says in the trailer.
Then, it cuts to shots of Demi partying with friends and yelling, "More!"
"I had three strokes. I had a heart attack. My doctors said that I had five to ten more minutes," the singer continues.