Study: Hype around Intermittent Fasting Not Warranted - Intermittent fasting may not outperform traditional diets for weight loss

A new review has examined the effectiveness of intermittent fasting for weight loss. Researchers analysed 22 studies involving nearly 2,000 participants worldwide. The findings suggest this eating pattern may not offer clear advantages over traditional diets.

The study, led by Garegnani and colleagues, focused on three common fasting methods: the 8:16 approach, the 5:2 plan, and alternate-day fasting. Participants followed one of these routines, but the review did not identify which was most popular.

Results showed that intermittent fasting led to only minor—or no—greater weight loss than other dietary strategies. Quality of life improvements were also similar across different eating patterns. Earlier meta-analyses had already reached comparable conclusions, finding no strong evidence that fasting worked better than standard diets.

Despite its popularity, long-term data on intermittent fasting remains limited. Few studies have tracked its effects beyond two years. Experts still recommend that anyone considering fasting for weight loss should consult a doctor first.

The review highlights that consistency matters more than the diet type itself. Those aiming to lose weight are advised to pick an approach they can maintain over time. While intermittent fasting remains an option, its benefits do not appear to surpass those of conventional methods.