A Cochrane review analyzed 22 randomized clinical trials with a total of 1,995 participants from North America, Europe, China, Australia and South America[1][2]. Researchers compared intermittent fasting with traditional dietary counseling and with no intervention[1]. They found that intermittent fasting did not make a clinically significant difference in weight loss compared to standard dietary advice or no treatment at all[1][2]. Most studies followed participants for up to 12 months[2]. Intermittent fasting also did not have a significant impact on quality of life[1]. The researchers emphasized that obesity is a chronic disease and short studies make it difficult to make long-term decisions for patients and clinicians[2]. The reporting of adverse effects was inconsistent across studies, making it difficult to draw firm conclusions[2].