Drew Barrymore and Demi Lovato have revealed their troubling experiences with drugs during childhood in the documentary 'Child Star'. Barrymore shared that she was introduced to marijuana by her mother's friend at age 10, reflecting on the absurdity of this now that she is a mother herself. Lovato emphasized the accountability of adults in these situations, suggesting it's hard not to blame them for exposing children to substances. Despite her early exposure, Barrymore asserted her accountability for her actions, stating, 'Those were all my actions, those were my reactions.' Both stars discussed how their experiences shaped their lives and coping mechanisms, with Barrymore calling herself a 'walking cautionary tale' regarding her struggles with addiction. This documentary expands on their stories, looking at the broader issues faced by child actors in Hollywood.