Repeatedly losing and regaining weight, commonly known as yo-yo dieting, may not be as detrimental to health as previously believed, according to new research from the University of Copenhagen. The study suggests that the associated health risks, once thought to be significant and in some cases worse than remaining overweight, have been "significantly overblown."
Historically, yo-yo dieting has been linked to potential issues such as muscle loss, an increased risk of diabetes, and heart disease. However, the latest findings indicate that many of these concerns may be unfounded. Researchers highlight that previous studies often failed to differentiate between weight loss achieved through dieting and weight loss resulting from underlying health conditions, such as cancer.
The study points out that while some health benefits gained from weight loss may diminish upon weight regain, this does not necessarily mean an individual's overall health status deteriorates compared to their pre-dieting state. The experts involved in the research argue that these findings should encourage individuals to pursue weight loss without excessive fear of subsequent weight regain.
In Great Britain, where approximately two-thirds of adults are overweight or obese, many individuals struggle with maintaining weight loss. Surveys suggest that over half of those who diet fail to keep the weight off, and some estimates indicate the average Briton attempts numerous diets throughout their lifetime.
Concerns have also been raised regarding the potential for newer weight-loss medications, such as Wegovy, to contribute to yo-yo dieting patterns, as their effectiveness is contingent on continued use. Studies indicate that a significant percentage of patients regain substantial weight after discontinuing these medications.
Despite these considerations, the researchers emphasize that attempting to lose weight remains a worthwhile endeavor. Professor Faidon Magkos, a nutrition expert at the University of Copenhagen, stated that many people are deterred from dieting due to fears of negative consequences from weight regain, but "these concerns are largely unfounded." The review concludes that, in most situations, the advantages of losing weight surpass the potential risks associated with regaining it later.