Demi Lovato Struggle To Stay Clean

Demi Lovato performs on stage in concert at the o2 in east London, Monday, June 25, 2018. (Photo by Joel C Ryan/Invision/AP)

Demi Lovato performs on stage in concert at the o2 in east London, Monday, June 25, 2018. (Photo by Joel C Ryan/Invision/AP)

Demi Lovato’s struggle to stay off drugs has been a slippery slope.

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