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Kristin Cavallari loses 20 pounds in two months: Her Paleo-style dairy-free diet

Kristin Cavallari lost 20 pounds after having her baby.
Kristin Cavallari lost 20 pounds after having her baby.Photo by Frederick M. Brown/Getty Images

Losing weight after having a baby has become a challenge for celebrities trapped in the media spotlight. Kristin Cavallari shared her weight loss secrets for losing 20 pounds in two months with Access Hollywood on July 25.

"I've been working out really hard. Those last five pounds are really stubborn. It's in your stomach," Kristin said in describing her reason for accelerating her diet and fitness program.

When it comes to weight loss, Kristin agrees with the Paleo diet belief that dairy causes problems. "I stay away from dairy for the most part," she said. "I think that is the number one weight gainer."

And in accordance with the latest studies that counting calories doesn't work for weight loss, Kristin focuses instead on the quality of her food. "I'm a freak about reading the ingredients. I don't count calories, I just read what's in whatever I'm going to be putting in my mouth," she revealed.

As a result, Kristin is so proud of her success that she's flaunting her figure in form-fitting attire. She's also following Kim Kardashian's lead by posting photos of her slimmed-down self, reported Life and Style magazine on July 25.

In addition to her diet, Kristin credits her workouts. "I've been working out four to five times a week for 30 to 45 minutes at home, doing tons of leg work like squats, lunges and lifting weights," she said.

To tone her tummy, Kristin plans to "start Pilates again to focus on my core. I'll probably get back into it in the next couple weeks."

Kristin's Paleo-style diet includes generous helpings of coconut oil. "I put coconut oil in or on everything," she told ABC News recently.

Also on the menu: Organic vegetables, chicken, fish and bison. "I have a snack in the afternoon—usually nuts with dried cherries," she said. "I also love avocados with olive oil and sea salt."

And while some have questioned the Paleo diet's exclusion of dairy and grains, ancestral health expert Loren Cordain defends it. In an exclusive interview, he noted that humans never ate processed foods, refined vegetable oils, whole grains or dairy products until the agricultural era.

In contrast to today, where such food groups comprise almost 70 percent of total calories in the typical U.S.diet, the Paleo plan "encourages consumers to return to our ancestral dietary patterns by consuming contemporary food groups (fresh fruits, vegetables, fish, seafood, grass produced meats and poultry, and nuts) that mimic the food groups consumed by our hunter gatherer ancestors for more than 2.5 million years," said Loren. Moreover, Kirstin's choice of a Paleo-style diet will help her maintain her weight loss.

"The DIOGENES trials published in the New England Journal of Medicine and Pediatrics showed that high protein, low glycemic load diets are the most effective diets in keeping weight off after weight loss in adults and preventing fat gain in children. These are the same diets whose nutritional characteristics emulate those of our hunter gatherer ancestors," added Loren.