The 25-year-old "When Love Hurts" hitmaker opened up about how it forced the singer to inject herself and adopt unhealthy eating habit, reported AceShowbiz.
"Here's something that I agreed to do that ended up messing with me psychologically. I was under a lot of pressure from a company that I was previously working with and they wanted me to lose weight fast.
"So, they got me with a nutritionist and had me on all these supplements and I was injecting myself," she said.
"I felt like, If I don't do this, my album won't come out. Which it didn't! So it's not like it even worked!" she said.