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Kim Kardashian: Corset waist training, ketogenic diet aided 7-pound weight loss

Kim Kardashian flaunts 7-lb weight loss in corset: Her low-carb ketogenic diet secrets
Jonathan Leibson/Getty Images, Kim Kardashian/Instagram

Kim Kardashian showed off her tiny waist and seven-pound weight loss in a tight corset in an Aug. 21 Instagram photo, where she revealed she's doing "waist-training," which involves wearing a corset for extended periods of time to make it smaller.

Kardashian, who recently complained that she wanted to lose 15 to 20 pounds, said she has lost seven pounds on a low carb diet ketogenic-style Atkins diet.

Kardashian recently lamented on Twitter that her body had changed after childbirth and her hips and butt "are huge now." Kim vowed to begin a "no-carb" diet to slim down and regain her svelte pre-baby body. “Just need to get down to my weight a few years ago," she tweeted Aug. 5. "Not gonna complain anymore. Starting diet today! No carbs, crazy workouts."

Kardashian added that losing weight had gotten harder since she become a mom. Ironically, the 5-foot-3 Kim had boasted on a recent episode of "Keeping Up With the Kardashians" that she weighed 125 pounds — five pounds less than her pre-pregnancy weight.

However, that episode was filmed several months ago, and Kim has apparently gained weight recently. Still, there's no denying she looks fantastic following her dramatic post-baby weight loss.

Kardashian lost 56 pounds just six months after giving birth (in June 2013) by following a low carb, high-fat ketogenic style Atkins diet that limited her daily carb intake to less than 60 grams. Focusing on healthy fats and limiting carbs promotes rapid weight loss by forcing the body to burn fat for fuel, said obesity expert Dr. Eric Westman, author of Keto Clarity.

Kim said she also worked out almost every day, combining strength-training, lots of squats and cardio exercise on the treadmill and elliptical trainer. Kim reportedly did waist training in the weeks leading up to her May 24 wedding to regain her signature hourglass figure.

While it may sound odd, "waist-training" or the "Corset Diet," is a weight loss trend some women use to winnow down their midsection. Proponents claim the "Corset Diet" can help women lost up to six inches from their waists, but health experts warn waist training can cause indigestion, constipation, rib pain and lung problems.