Justice's struggle with Hashimoto's caused her to develop acne and her weight to fluctuate

By Ana Calderone
Updated October 13, 2015 02:55 PM
Credit: James White

Victoria Justice is opening up about a recent health struggle.

“A few years ago, I was diagnosed with Hashimoto’s, which is a thyroid autoimmune disorder,” the actress, 22, tells Health magazine in its November cover story.

The disease, which can lead to an underactive thyroid gland and affect the metabolism, caused acne and weight fluctuations. “All my life I’ve always had great skin, so it was really devastating,” Justice says.

“Also, at first, I was losing a lot of weight, then I went on tour and I started gaining weight, and it was the most I’d ever gained in my life. I was, like, 115 pounds. Then when I filmed a movie last summer, I actually went under 100 pounds,” says the 5’5″ actress.

Justice says the change in her skin “definitely did affect my confidence, and it made me a little bit more self-conscious. But at the end of the day, I had the support of my family and friends. I knew that the people around me had my back. Now I really empathize with people who have issues with their skin, because it can get you down.”

Now the former Eye Candy star says that although she still has the disorder, she is “back to normal.”

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“It was crazy, but things have leveled out,” she says. “I’m not on medication. I feel good.”

Justice also went on to reveal the simple ways she stays healthy like exercise, taking daily vitamins and 10 minutes of meditation per day.

“To be honest, I used to hate working out, but as I’ve gotten older, I’ve realized that it gives me so much more energy, and it just makes me feel so much better,” she says

If she’s not working with a trainer, one of her favorite ways to stay fit is a twerking class. Yes, really.

“I’m not kidding. It’s actually a really great workout. After 10 minutes of twerking, your thighs and your butt feel it right away,” she says. “But it’s so much fun. You feel free. It’s like, ‘Who cares? I’m twerking!’ “