Low-fat diets are no better for long-term weight loss than high-fat ones, according to a new analysis of several studies.
A team led by Deirdre Tobias at the Harvard School of Public Health analyzed 53 experiments, each lasting at least one year, that placed participants on different types of diets — some low-fat, some high-fat and low-carb, and so on.
"There is no good evidence for recommending low-fat diets," said lead author Tobias in a press release issued along with the study. "Behind current dietary advice to cut out the fat, which contains more than twice the calories per gram of carbohydrates and protein, the thinking is that simply reducing fat intake will naturally lead to weight loss. But our robust evidence clearly suggests otherwise."