Carbs for Weight Loss

Provided By Prevention

We Found It: Why eating carbs can help you slim down--and how to do it right!

Potatoes get a bad rap as little more than a waist-thickening waste of calories. But amazing new research puts spuds squarely at the center of the latest weight loss buzz, along with other unfairly maligned carbs such as corn and rice. The reason: All these foods contain resistant starch, a unique kind of fiber you'll be hearing a lot more about. In fact, experts agree that it's one of the most exciting nutrition breakthroughs they've seen in years. "Resistant starch has the potential to become the next hot nutrition trend," says Leslie Bonci, RD, author of the American Dietetic Association's Guide to Better Digestion. Indeed, more than 160 studies have examined this little known nutrient's remarkable health and weight loss benefits.

Resistant Starch: The New Power Nutrient

Although this may be the first you've heard of resistant starch, it's likely been a part of your diet most of your life. Resistant starch is a type of dietary fiber naturally found in many carbohydrate-rich foods such as potatoes, grains, and beans, particularly when these foods are cooled. It gets its name because it "resists" digestion in the body, and though this is true of many types of fiber, what makes resistant starch so special is the powerful impact it has on weight loss and overall health. As a dieter's tool it can't be beat: Not only does it increase your body's ability to burn fat, but it also fills you up and reduces overall hunger. Its health benefits are truly impressive as well. Studies show it improves blood sugar control, boosts immunity, and may even reduce your cancer risk.

Resistant starch is bulky, so it takes up space in your digestive system. And because you can't digest or absorb it, the starch never enters your bloodstream. That means it bypasses the fate of most carbohydrates, which get socked away as body fat when you eat more than you can burn. Here are two more key ways resistant starch can help you drop unwanted pounds:

It ups your calorie burn. Unlike some types of fiber, resistant starch gets fermented when it reaches the large intestine. This process creates beneficial fatty acids, including one called butyrate, which may block the body's ability to burn carbohydrates. "This can prevent the liver from using carbs as fuel and, instead, stored body fat and recently consumed fat are burned," explains Janine Higgins, PhD, nutrition research director for the University of Colorado's Adult and Pediatric General Clinical Research Center. In your body, carbohydrates are the preferred source of fuel, like gasoline that powers your car's engine. Butyrate essentially prevents some of the gas from getting into the tank, and your cells turn to fat as an alternative. One study found that replacing just 5.4% of total carbohydrate intake with resistant starch created a 20 to 30% increase in fat burning after a meal.

It shuts down hunger hormones. Animal studies have found that resistant starch prompts the body to pump out more satiety-inducing hormones. A meal with resistant starch triggers a hormonal response to shut off hunger, so you eat less. Research shows that you don't reap this benefit from other sources of fiber.

Next: How to Eat Resistant Starch

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