Stories about: diet

Low-carb diets make us burn more calories, finds largest, longest feeding trial to date

Low carb diet helps us burn calories faster, supporting the Carbohydrate-Insulin Model of obesity
Supporting the Carbohydrate-Insulin Model of obesity, a new study finds that low-carb diets increase our energy expenditure.

Most people who diet to lose weight regain the pounds within a year or two, in part because the body adapts by slowing down metabolism and burning fewer calories. A new study known as the Framingham State Food Study, or (FS)2, suggests that low-carb diets can help people keep the weight off, showing that eating fewer carbohydrates increases the number of calories burned. The findings, published today in the BMJ, could help make obesity treatment more effective.

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News Note: More evidence that high-glycemic diets cause obesity

a high-glycemic diet

A large genetic analysis lends credence to the idea that insulin spikes after eating high-glycemic foods promote weight gain. People genetically predisposed to produce higher than normal levels of insulin after eating processed carbohydrates — “bad carbs” like white bread, potatoes and refined sugar — were more likely to be obese, the study found.

The researchers, led by David Ludwig, MD, PhD, of Boston Children’s Hospital, Joel Hirschhorn, MD, PhD, of Boston Children’s and the Broad Institute, and Jose Florez, MD, PhD, of the Broad Institute and Massachusetts General Hospital, tapped a collection of large-scale genome-wide association studies. Analyzing data from more than 26,000 people who had glucose challenges, they identified genetic variants linked with high insulin levels 30 minutes after the challenge.

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