Scientists Say ‘Yo-Yo Dieting’ May Not Be Ruining Your Metabolism After All

A major review in The Lancet Diabetes & Endocrinology finds little convincing evidence that repeated weight loss and regain causes lasting metabolic damage in people with obesity.

The authors say weight regain mainly reverses earlier benefits, rather than adding new harm to metabolism.

The findings could ease fears about yo-yo dieting and encourage continued treatment efforts for obesity.

The review may also influence guidance on GLP-1 drugs and newer dual incretin agonists.