Supplements · Diets
Does a sucralose byproduct damage your DNA?
The claim, precisely: sucralose-6-acetate causes genotoxicity
Refuted Supplements 🔬 Includes disconfirming
RefutedContestedStrong support
consensus score -0.88
No — the alarming lab studies are disputed, and a 2026 safety review found no concern.
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)
MechanismIn-vitroAnimalObservationalRCTMeta-analysis
How the studies fall
2 support 2 contradict 0 tested null 0 mixed · 3 sources, 3 independent groups
What the evidence shows
Sucralose-6-acetate (a manufacturing impurity + gut metabolite) was genotoxic and disrupted gut-barrier integrity in vitro. A distinct safety question from insulin resistance - do not conflate; no human outcome data.
The evidence (4)
| Source | Grade | Stance | Quality | Finding |
|---|---|---|---|---|
| Schiffman SS, et al. 2023 · (in-vitro) | in-vitro | supports | low | [FT-verified] Schiffman2023 (origin): ongoing journal complaint; sister 2024 paper carries Editor Expression of Concern; not decisive per EFSA |
| Schiffman SS, et al. 2023 · (in-vitro) | in-vitro | supports | low | In-vitro: sucralose-6-acetate clastogenic (DNA strand breaks) + impaired gut epithelial barrier |
| Elmore 2024 · Food Chem Toxicol | observational | contradicts | moderate | Pathologists find design flaws in the sucralose Ramazzini carcinogenicity bioassay underpinning DNA-damage claims |
| EFSA 2026 · EFSA J | meta-analysis | contradicts | high | [FT-verified] EFSA2026 reeval: 2 S6A studies negative; NO genotoxicity concern; Schiffman2023 deemed not decisive |
Educational only, not medical advice. Grades and scores reflect published evidence weighted by study design and quality; see the methodology.