Demi Lovato: 19 (VERY!) Candid Confessions from Her Documentary

Demi Lovato has always been an open book.

The singer has never shied away over the years from discussing her battles with substance abuse and an eating disorder.

In the YouTube documentary "Simply Complicated," Lovato is an open... series of books?

We're not sure how to phrase it, we just know the artist discusses absolutely everything, from her career to her drug use to her most famous relationship.

Scroll down and then all around for a look at all we learned about Lovato in this...

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