Kim Kardashian has reportedly lost her baby weight by doing the Atkins diet. She said on Sunday via Twitter, "I've actually been doing the Atkins diet & luv it."

The tweet was a response to a question a fan asked her about how she has lost the baby weight since the birth of her daughter to boyfriend Kanye West.

The Atkins diet is a famous low carb diet where you stop eating processed food and focus on eggs, dairy, fresh veggies and lean meats and fruit. Eventually you can add in grains like whole wheat pasta and brown rice.

"It teaches that our bodies convert carbs to glucose and glucose to fat - and that we have no choice but to burn stored fat when carbs aren't such a plentiful source of fuel," reported NY Daily News.

"After she delivered her baby on June 15, she wanted an effective and balance 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 to The NY Daily News. "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.

E! News reported that Sharon Osbourne has said that both Jack and Ozzy Osbourne have used Atkins and lost weight.

"What distinguishes the Atkins diet is the absence of a lot of carbohydrates, so that leaves out a lot of choices. You can make bad choice and good choices, but there's nothing dangerous about the Atkins diet. There really isn't a downside to it," nutritionist and author of The Great Cholesterol Myth, Jonny Bowden said to E! News.

"Low-carb eating is the healthiest way to go and I completely support that, but you have to really change your relationship with food," he adds. "I haven't in 20 years of practice seen any real negative effects on someone that follows a low-carb diet regularly using good foods and a smart approach."