Lancet Review Finds Yo‑Yo Dieting Not Harmful
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- The Lancet Diabetes & Endocrinology published a personal view article reviewing decades of weight‑cycling research, concluding there is little evidence that yo‑yo dieting causes long‑term metabolic harm.
- Prof. Faidon Magkos of the University of Copenhagen said the review shows fears of muscle loss and metabolic damage from weight cycling are largely unsupported.
- Prof. Norbert Stefan of the German Center for Diabetes Research (DZD) noted that once pre‑existing conditions, aging, and obesity exposure are accounted for, the supposed harmful effects of weight cycling disappear.
- The review found that weight regain typically returns body composition to baseline, without causing excess muscle loss or lasting metabolic slowdown.
- The study examined observational and randomized trials and found no consistent link between weight cycling and increased risk of diabetes or cardiovascular disease.
Why it matters: Obese patients gain confidence to pursue weight loss without fearing permanent metabolic damage, as the May 17 2026 Lancet review shows no lasting harm from weight cycling, potentially easing long‑term obesity‑related healthcare costs.
