Demi Lovato In Mourning After Friend's Death: "Addiction Is No Joke"

An overdose survivor herself, the singer also encouraged her fans to seek help if they or someone they know is struggling with a substance use disorder.

Demi Lovato Inspired "Real Housewives" Star Luann de Lesseps' Recovery 

The singer's candidness about her recovery journey helped de Lesseps feel like she wasn't struggling alone.