Sophie Kasaei went "completely bald" on part of her head because of her bad diet.
The "Geordie Shore" star has taken drastic action to overhaul her eating habits and as well as losing weight, she's also seen some other positive effects from being more healthy.
She said: "I lost 10lbs in 10 days from just cutting the s**t out, changing my diet and taking supplements. If you just change little things, you will see the difference. I used to wake up and have Gregg's for breakfast and then mid-morning I'd have pizza from the night before. It was absolutely disgusting. I even had traction alopecia, where the side of my head went completely bald due to stress and bad diet. It's not rocket science. If you wanna go out with the girls, go out with the girls, but don't start mixing beer and wine."
The 28-year-old reality star decided she needed to lose weight after getting so upset about her appearance and the cruel comments it had sparked, she cancelled a holiday.
She said: "I was always the bigger one out of the "Geordie Shore" girls and I'd just accepted it.
"It was this summer [things changed] when I cancelled a girls" holiday because of the way I looked. Seeing photos of myself and seeing horrible comments about how fat and ugly I was - even though I'm strong-minded, that can get to you."
And Sophie - who recently split from boyfriend Joel Corry after six years of dating - is "really proud" of her transformation.
She told heat magazine: "I feel good in myself. I'm confident enough to go out with the girls.
"People aren't really aware that I'm single yet but when word gets around then, yeah. If you look on my Instagram, I'm taking so many more photos of myself because I'm really proud."