The intermittent fasting diet, which involves periods of severe calorie restriction, may be on the way out, as new research from the University of Surrey is suggesting that rather than drastically reducing calories, people can achieve similar metabolic benefits by cutting back on carbs.
In Surrey's study, participants aged 20-65 years who were overweight or obese, followed three different diet plans for one day: a normal carb diet, a low-carb diet with balanced calorie intake, and a low-carb diet with significant calorie restriction.
Researchers found that both low-carb diets, regardless of calorie reduction, led to improvements in the participants' metabolic markers, and better handling of a high fat meal, including reduced levels of triglycerides -- a type of fat in the blood that may lead to heart disease -- and a shift towards burning fat for energy.
Dr Adam Collins, co-author of the study and Associate Professor of Nutrition at the University of Surrey, explained:
"We found that by simply restricting carbohydrates, without enduring extreme calorie restriction, we can reap the metabolic effects associated with short-term fasting. This suggests that periodically reducing our carbohydrate intake could be a more accessible and sustainable way for people to manage and improve their metabolic health."
Know more: https://www.sciencedaily.com/releases/2025/04/2504...

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