Study: Not all calories are created equal

Research shows only one out of six overweight people can maintain even 10 percent of any weight loss over the long term. Now a new study, published in the Journal of the American Medical Association, has found a possible explanation: all calories are not created equal.

After losing about 30 pounds weight, 21 young adult participants were put on three different diets to see how they affected metabolism: low fat, low carb and low glycemic index. While on the low fat diet, people burned fewer calories, making it harder to keep off weight. People on the low carb diet burned the most calories, but had increased risk of heart disease, while the low glycemic diet offered medium calorie burning, with little risk of negative effects. Researchers say diets that reduce a blood sugar surge after a meal, either low glycemic or low carb, may be preferable to low fat for those trying to achieve lasting weight loss. Read more: http://www.cbsnews.com/8301-505269_162-57461579/study-not-all-calories-are-created-equal/

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