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The study, published Wednesday in the BMJ journal, involved 164 overweight or obese people. Their weight was brought down by 12%, and they were stabilized at that weight and put on a high-, medium- or low-carbohydrate diet for 20 weeks.
The diets were made up of 20% carbs and protein and 60% fat, 40% carbs and fat and 20% protein, or 60% carbs and 20% protein and fat.
While participants were on these diets, their calorie intake was controlled so that they maintained the baseline weight. If a participant started to lose weight, their calorie intake was increased or decreased.
"If somebody 's metabolism speeded up, they would have begun, and that would have increased calories," said Ludwig, who is also a professor of pediatrics and nutrition at Harvard University.
The research looked at diet, which is one of the things that you are trying to maintain.
"These findings show that all calories are not able to be metabolized and that restricting carbohydrates can be a better strategy than restricting calories for long-term success," Ludwig said.
He also believes that, without the calorie control intervention, having a low-carb diet could create spontaneous weight loss of about 20 pounds over a few years.
Sattar, who was not involved with the study, said that the low-carbohydrate group seems to have more calories than the other groups to have kept similar weights.
"This is one of the most important things in the world. It is one of the most important things in the world. , he said.
"So, in short, I do not believe that this work changes anything and nor does it make me feel better than I can."
Experts also pointed out that all participants had the same basic metabolic rate, so they could explain differences, which could lead to increased cholesterol and heart disease risk.
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