Updated On: 20 August, 2017 04:19 PM IST | Mumbai | mid-day correspondent
<p>Did you know Demi Lovato struggled with bipolar disorder and drug addiction? As she turns a year older, we recap stories of Hollywood celebrities who have overcome a not-so-rosy past</p>

Demi Lovato, Zac Efron, Robert Downey Jr, Drew Barrymore
Demi Lovato
The actress has never shied away from talking about her ‘darkest’ days. Over the years, Lovato has gone on record to talk about her struggles with bipolar disorder, drug addiction, eating disorder and depression. During an interview, she revealed that at a certain point others’ lifestyle would make her jealous but that didn’t make her bitter.
