It turns out that the days of thinking all calories are the same are over. Think of the classic mind trick of guessing what weighs more: a pound of bricks or a pound of feathers? While the answer is that they weigh the same, they’re still different materials. That’s basically what researchers at the Children’s Hospital discovered after experimenting with different types of diets.
The researchers divided a group of 21 overweight men and women into three groups, each on a different type of diet. One group was put on a low-fat diet, another on a low-carbohydrate diet and the last on a low glycemic index diet.
While the low-carb dieters burned more calories than the low-fat dieters, the experiment revealed that those on the low glycemic index diet did the best. Plus, those on the diet, which is rich in whole grains, beans and vegetables similar to the Mediterranean diet, were more successful at keeping the weight off.
“From a metabolic perspective, all calories are not alike,” said study author David Ludwig. “The quality of the calories going in, affects the quantity of the calories going out.”
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