Low-Carb Diets May Work By Boosting Calorie Burn
https://ift.tt/2RSE3Cw People on the low-carb diet got 20 percent of their calories from carbs like vegetables, fruits and beans; a full 60 percent of their calories came from fat, including sources like meat, whole milk, cheese and nuts. The remaining 20 percent of calories came from protein. The situation was flipped for people on the high-carb plan: 60 percent of calories from carbs and 20 percent from fat. The moderate plan divided the two nutrients equally, at 40/40. After 20 weeks, the low-carb group appeared to be burning more calories -- an average of 250 more per day, versus the high-carb group, and 111 more than the moderate-carb group. The researchers did not look at the effects on any further weight loss. Instead, each person's calorie intake was calibrated to maintain what they'd already lost. The point, Ludwig explained, was to zero in on the effects of the different diets on calorie burning. According to Dr. Anastassia Amaro, an assistant professor of endocrinology and metabolism at the University of Pennsylvania, "The study design is very clever." Amaro, who was not involved in the research, said she already suggests that patients cut back on carbs when they are trying to lose weight. These findings, she said, will boost her confidence in that advice. However, Amaro said, the low-carb diet used in this study is not ready for a "direct translation" into the real world. For one, she explained, it's not clear whether it's the lack of carbs that was key. "This is also a high-fat diet," Amaro pointed out. "Is it the lack of carbs, the fat content, or both?" What about the nutritional value of such a diet? Ludwig said it's healthy -- allowing fruit, legumes and an "unlimited" amount of vegetables, for instance. "What it doesn't have is grains and added sugar," he said. Ludwig agreed, however, that more research is needed to show whether the approach is the best way to maintain weight loss. He and his colleagues recently started a new trial that will pit a very low-carb diet against one that is high-carb but low in sugar, and another that is high-carb/high-sugar. Health via WebMD Health https://www.webmd.com/ November 14, 2018 at 03:37PM
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