Intermittent fasting no better than typical weight loss diets, study finds

A comprehensive review of recent research suggests that intermittent fasting isn’t significantly more effective for weight loss than traditional dieting methods. The analysis, which examined data from 22 studies, indicates that individuals attempting to lose weight achieve similar results with conventional dietary approaches as they do with intermittent fasting regimens like the 5:2 diet.

The Findings in Detail

Researchers found that those who are overweight or living with obesity lost approximately 3% of their body weight while following intermittent fasting plans. This modest weight loss is considered far below the 5% threshold that medical professionals generally view as clinically meaningful. The studies included in the review spanned a maximum of 12 months, focusing on short-term improvements.

Did You Know? The Cochrane review analysed data from randomized clinical trials involving 1,995 adults across five continents: Europe, North America, China, Australia and South America.

Dr. Luis Garegnani, lead author of the review and director of the Cochrane Associate Centre at the Italian hospital of Buenos Aires in Argentina, emphasized that intermittent fasting should be considered “one option among several for weight management.” He stated that it yields results comparable to traditional diets, without demonstrating clear superiority.

Beyond Weight Loss

The review also found limited evidence to suggest that intermittent fasting offers significant improvements in quality of life compared to other dietary approaches. While intermittent fasting has gained popularity with claims of boosting health and slowing aging, the research doesn’t strongly support these assertions.

Expert Insight: The findings suggest that the widespread promotion of intermittent fasting as a revolutionary weight loss solution may be overstated, and that a balanced approach to diet and lifestyle remains crucial.

Researchers noted that many existing studies on intermittent fasting are short-term and of limited quality, making it difficult to draw definitive conclusions. Surprisingly, none of the 22 studies assessed participant satisfaction with intermittent fasting.

What Could Happen Next

If these findings are widely accepted, we could see a shift in public health messaging, with less emphasis on intermittent fasting as a guaranteed weight loss strategy. It’s possible that future research will focus on identifying specific subgroups of individuals who might benefit most from intermittent fasting, or on optimizing fasting protocols to maximize their effectiveness. Further investigation into the long-term effects of intermittent fasting is also likely.

Frequently Asked Questions

What is intermittent fasting?

Intermittent fasting involves restricting eating to specific hours or fasting on certain days.

How much weight loss was observed with intermittent fasting in the studies?

People following intermittent fasting lost about 3% of their body weight, which is considered below the 5% threshold for clinically meaningful weight loss.

Did the review find any benefits of intermittent fasting beyond weight loss?

The researchers found no strong evidence that intermittent fasting improved people’s quality of life more than other diets.

Given these findings, how might you re-evaluate your approach to weight management and overall health?

Intermittent fasting no better than typical weight loss diets, study finds | Science