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High-Protein Versus Low-Protein DietsHalton TL, Hu FB: The effects of high protein diets on thermogenesis, satiety and weight loss: A critical review. J Am Coll Nutr 23:373-385, 2004. What is the problem, and what is known about it so far?Many popular diets say that eating more protein helps people lose weight. Some research has shown that this may be true, but the results of studies have been inconsistent. Researchers have suggested that a high-protein diet may make people burn calories faster or feel full longer, leading to weight loss. One problem is that many of the clinical studies have been too short in duration to make good conclusions about long-term effects. Researchers wanted to find out if high-protein diets increase weight loss in long-term studies, and, if so, why. Who was studied?Researchers reviewed articles instead of interviewing people for this study. How was the study done?Articles from a medical journal database that included the words "high-protein diet and weight loss" and "ketogenic diet and weight loss." Ketogenic means a high-fat, low-carbohydrate diet that includes normal amounts of protein. Fifty articles were included in the review. What did the researchers find?The review suggests that, in the short term (less than 6 months), high-protein diets may help people lose more weight and body fat. The researchers believe this may occur because people feel more full when eating high-protein foods, which may help a person eat less. What are the implications of the study?Although this review suggests that high-protein diets may help weight loss in the short term, further study is needed to determine whether this is also true in the long term. |
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