Throughout her eight-year stint on HBO’s Game of Thrones, Sophie Turner tells Marie Claire Australia that she often suffered from mental health issues due to pressure she felt from above.

The 23-year-old says: “I have experienced mental illness firsthand and I’ve seen what it can do to the people around the sufferers as well.”

She adds that her body has changed since joining the production to play Sansa Stark at age 15. She explains: “My metabolism suddenly decided to fall to the depths of the ocean and I started to get spotty and gain weight, and all of this was happening to me on camera.”

To make matters worse, she says fans and studio execs pressured her to lose weight. So she turned to therapy: “Everyone needs a therapist, especially when people are constantly telling you you’re not good enough and you don’t look good enough. I think it’s necessary to have someone to talk to, and to help you through that.”

Turner, who married Joe Jonas in a surprise Vegas ceremony after the Billboard Music Awards Wednesday, has spoken out about her history of depression and body-shaming before.

In April, she told Dr. Phil McGraw: “People used to write, ‘Damn, Sansa gained 10 lbs.,’ or ‘Sansa needs to lose 10 lbs.’ It was just a lot of weight comments. Or I would have spotty skin because I was a teenager and that’s normal, but I used to get a lot of comments about my skin and my weight and how I wasn’t a good actress.”