Scientists from the Cochrane review found that intermittent fasting may not actually help with weight loss compared to traditional dieting methods [1, 2].
This finding challenges a popular health trend used by millions of people to manage weight and metabolic health. It suggests that the perceived benefits of intermittent fasting may be based more on general calorie restriction rather than the specific timing of meals.
According to the research, the review evaluated the weight loss benefits of intermittent fasting versus traditional calorie-restricted diets [1, 3]. The study analyzed how different fasting windows—including a 16-hour fast [4]—impact the body's ability to lose weight.
While the popular 16-hour fast is widely used, some reports indicate that the same results can be achieved through traditional dieting. There is a contradiction in the research regarding the reason for this reason. Some sources suggest that intermittent fasting is simply no more effective than traditional dieting [2], while others suggest that eating earlier in the day is more closely linked to lower weight and better metabolic health than the fasting method [5].
Because the Cochrane review is considered a gold standard in medical research, the results suggest a shift in dietary onset. For those seeking weight loss, the evidence indicates that the same results can be achieved through traditional calorie restriction without the strict timing requirements of intermittent fasting.
“Intermittent fasting may not actually help with weight loss compared to traditional dieting methods.”
The lack of evidence for the superiority of intermittent fasting suggests that the weight loss may be more a result of calorie deficit regardless of the timing of when those calories are consumed. This indicates that a sustainable dietary pattern that fits an individual's lifestyle is more important than following a specific fasting window.
