Diets that reduce calories lead to weight loss, regardless of carbohydrate, protein or fat content

Many popular diets emphasise either carbohydrate, protein or fat as the best way to lose weight. However, there have been few studies lasting more than a year that evaluate the effect on weight loss of diets with different compositions of those nutrients. In a randomised clinical trial led by researchers at the Harvard School of Public Health (HSPH) and Pennington Biomedical Research Centre of the Louisiana State University System, a comparison of overweight participants assigned to four different diets over a two-year period showed that reducing calories achieved weight loss regardless of which of the three nutrients was emphasised...

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