Sweeteners
acesulfame-K causes genotoxicity
Part of: • acesulfame-K
Evidence ladder
How far up the ladder this claim has climbed. A high consensus on a low rung means "consistent so far," not "proven in people."
Top evidence so far: All trials, pooled (Meta-analysis)
How the studies fall
What the evidence shows
Despite recurring suspicion, high-quality toxicology finds **no credible genotoxic or carcinogenic signal** for acesulfame-K, and regulators (JECFA/EFSA/FDA) hold it safe at normal intakes. The main dissent is the NutriNet-Santé cohort's weak association of Ace-K with cancer risk — observational and unreplicated. Net: not supported as genotoxic. measured_by:: [[genotoxicity]]
The evidence (8)
| Source | Grade | Stance | Quality | Finding |
|---|---|---|---|---|
| Yan et al. 2022 · Nutrients | meta-analysis | mixed | moderate | MA: ace-K subgroup among sweeteners with a weak Europe-only cancer signal; overall null. |
| Marchitti et al. 2025 · Adv Nutr | meta-analysis | contradicts | high | Review of animal + mechanistic evidence: no genotoxic or carcinogenic potential for acesulfame-K (or other NSS except the human-irrelevant saccharin rat effect). |
| Li et al. 2024 · Br J Nutr | meta-analysis | contradicts | moderate | MA: non-nutritive sweeteners (incl. ace-K) not associated with endometrial cancer. |
| Pavanello et al. 2023 · Regul Toxicol Pharmacol | observational | contradicts | moderate | Tox + epi review: no evidence of cancer risk associated with acesulfame-K. |
| Haighton et al. 2019 · Regul Toxicol Pharmacol | observational | contradicts | moderate | Quality-appraised epidemiology: no support for ace-K increasing cancer risk. |
| Zhu et al. 2024 · Med Princ Pract | meta-analysis | contradicts | moderate | MA: artificial sweeteners not associated with higher colorectal cancer. |
| Debras et al. 2022 · PLoS Med | observational | supports | moderate | NutriNet-Santé cohort: acesulfame-K intake weakly associated with higher overall cancer risk (observational). |
| Xie et al. 2024 · J Transl Med | observational | mixed | low | Integrative analysis of artificial sweeteners and cancer: associations inconsistent across sweeteners/sites. |
Disagree, or know a study we missed?
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