Sweetener findings depended partly on how comparisons were analyzed
An umbrella review found broadly consistent trial results for weight, but conflicting cohort associations under different analytical approaches.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
Trial syntheses reported lower energy intake, body weight and body fat with low- and no-calorie sweeteners under both analytical approaches. Cohort associations changed direction when analyses accounted for substitutions or changes in use. This review therefore highlights how analytical choices influence conclusions; its generally very low-certainty cohort evidence cannot establish disease prevention.
The abstract does not report effect sizes, study durations or participant characteristics. Evidence certainty was generally moderate for trials and very low for cohorts, limiting conclusions about disease outcomes.
What the approaches changed
The simpler approach grouped trial comparators together and examined existing sweetener use in cohorts. The adjusted approach considered what sweeteners replaced, or changes in use, so the analyses did not ask exactly the same question.
Outcomes did not all agree
Body mass index and systolic blood pressure improved only in adjusted trial analyses. Glycated hemoglobin reductions were smaller than with water in those analyses, showing that the direction of results varied across measured outcomes.
The original publication
Reconciling conflicting evidence on low- and no-calorie sweeteners and cardiometabolic outcomes: an umbrella review using naïve and bias-adjusted methods.
Ayoub-Charette S, Kavanagh M, Khan T et al.
Appl Physiol Nutr Metab · 2025
- PubMed ID
- 41428417
- Record checked
AI-assisted research and writing. This explains one selected publication; it is not a complete review of everything known. Our approach.
One more question, understood.
Keep track of the research you’ve explored.