Bethenny Frankel said she starved herself, binged on laxatives and tried fad diet until just a few years ago.
"Until my early thirties, I spent my entire life being obsessed with dieting," Frankel told Us.
"Bingeing and then fasting or starving. I used to forbid myself from everything," she recounts. "That's how I used to be: up and down 5 pounds every single day, to the extremes. My metabolism was totally wrecked."
Bethenny, a reality tv star who wrote the best-selling diet book Naturally Thin, claims she got her eating disorders under control by adopting a more relaxed approach to eating.
Instead of restricting certain foods, the 5'6" Frankel maintains her slender 115-pound figure by eating healthy foods in tiny portions, never overeating and doing yoga several times a week.
Bethenny says her epiphany came in 2006 during a trip to Italy, where she learned to eat her favorite foods but in small portions.
Frankel, who previously revealed that her mom Bernadette Birk was anorexic and bulimic, says her weight issues began during childhood.
"There was a lot of food obsession and diet obsession and being-thin obsession [in my home during childhood," says Frankel, who went to a weight loss camp at the age of 8.
"My mother was very beautiful and very thin," Bethenny recounts. "Being thin was very important to her and part of her identity. I also wanted to be thin."
Frankel says she has finally conquered her diet obsession and body image issues. "I always say I don't think you should be guilty about food," she says. "You can have it all. Just don't have it all at once!"
Frankel shared her weight loss and success secrets in her bestseller, Skinnygirl Solutions.