Demi Lovato was barely a teen when she started experimenting with drugs and alcohol. The 30-year-old singer got candid about her past during an interview with Alexandra Cooper for the Wednesday episode of the «Call Her Daddy» podcast, and she didn't hold back.«I started experimenting for the first time when I was 12, or 13,» Lovato recalled, before noting that it was due to an injury that she was introduced to pills.