(NewsNation) — Charlie Sheen’s new memoir has shed new light on his life, including the personal and career meltdown that made global headlines.

Sheen reveals all in his new memoir "The Book of Sheen," released Tuesday. He writes about his reliance on drugs and alcohol, being with sex workers, his marriages and divorces, as well as his mental health struggles.

Here are some of the biggest revelations in the former “Two and a Half Men” star’s new book.

Charlie Sheen details crack use

Sheen writes that he started using substances at an early age. He tried marijuana at 11 years old and cocaine in high school, according to USA Today.

“The main issue with the drug, for me, was how cunning it was,” Sheen writes in the book. “I’d be going about my day handling a bunch of not cocaine things,

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