(UPI) -- Kim Kardashian has been shedding the pounds since the birth of baby North West.
Kardashian revealed Sunday that she had been on the Atkins diet to get down to her pre-baby weight in response to a question from a Twitter follower.
I've actually been doing the Atkins diet & luv it RT @AlwaysKhloverxo: Need to know @KimKardashian secret on how she's lost so much weight— Kim Kardashian (@KimKardashian) October 13, 2013
Atkins is the original low-carb diet and emphasizes eating lean meat, eggs, dairy, veggies and fruit over processed foods.
A representative for Atkins said that Kardashian started in Phase 2, the less strict version of the diet, because she was nursing.
“After she delivered her baby on June 15, she wanted an effective and balanced way to lose the baby weight. She’d done Atkins before and knew it worked, so once she got the approval of her doctor, we connected her with our Vice President of Nutrition Colette Heimowitz, who counseled her directly,” Jennifer Livingston, a spokeswoman with Atkins Nutritionals, said.
“Being a new nursing mother, she needed adequate calories to be healthy for her child and keep up her milk production. What’s great about Atkins is that it’s not about counting calories or depriving yourself,” she said.