What The Study Did: An analysis of self-reported national dietary data from more than 37,000 U.S. adults suggests associations between low-carbohydrate and low-fat diets and the risk of death may depend on the quality and food sources of the carbohydrates, proteins and fats people eat. The diet scores in this observational study don't mimic particular versions of diets so the results cannot be used to assess the health benefits or risks of popular diets. Researchers report overall low-carbohydrate-diet and low-fat-diet scores weren't associated with risk of total mortality but unhealthy low-carbohydrate-diet and low-fat-diet scores were associated with higher total mortality and healthy low-carbohydrate-diet and low-fat-diet scores were associated with lower total mortality.
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Authors: Zhilei Shan, M.D., Ph.D., of the Harvard T.H. Chan School of Public Health in Boston, is the corresponding author.
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JAMA Internal Medicine