Low Carb or Low Fat diet? The Harvard Health Letter investigates the debate

If weight loss were a sprint, the low carb diet plan would win hands down. It is not completely certain why people lose weight faster on low carb diets, although one of the most likely explanations is that they are better at suppressing appetite for a time, making it easier to achieve the ultimate goal of all diets, cutting calories. However, results from two studies summarized in the August issue of the Harvard Health Letter show that with regards to weight loss, low carb and low fat diets end up in a statistical tie after a year. In the first study, published last year, the low carb diet plan spurted ahead of their low fat counterparts during the first six months, only to regain pounds in the next six. In the second study, published earlier this year, the low carb group kept off the pounds, but the low fat group caught up with them by continuing to lose weight. However, because obesity can be a lifelong issue for many people, the August issue advises that longer studies are needed to examine long-term weight loss progress of both diets, not just results for a year.
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