Supplements · Sweeteners · Diets
sucralose-6-acetate causes genotoxicity
In plain terms: Does a sucralose byproduct damage your DNA?
No — the alarming lab studies are disputed, and a 2026 safety review found no concern.
🧭 Read this score with how it was built in mindThe same paper had been counted more than once
One 2023 laboratory study was present three times, and one of those copies had additionally been recorded as a human observational study when it is a cell-culture experiment. Both errors are corrected.
📅 Last reviewed: 2026-07-15 ⓘ
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: Population patterns (Observational)
How the studies fall
What the evidence shows
In-vitro work reported sucralose-6-acetate (a manufacturing impurity and gut metabolite) as genotoxic and disruptive to gut-barrier integrity, but those findings are disputed and a 2026 safety review found no concern; there are no human outcome data, so the evidence leans against. A distinct safety question from insulin resistance - do not conflate.
The evidence (6)
| Source | Grade | Stance | Quality | Finding |
|---|---|---|---|---|
| Schiffman SS, Scholl EH, Furey TS, Nagle HT 2023 · (in-vitro) | in-vitro | supports | low | Schiffman2023 (origin): ongoing journal complaint; sister 2024 paper carries Editor Expression of Concern; not decisive per EFSA |
| Brusick D, Grotz VL, Slesinski R, Kruger CL, Hayes AW 2010 · Food Chem Toxicol | in-vitro | tested-null | moderate | Original safety battery found parent sucralose NEGATIVE in Ames, chromosome-aberration and micronucleus tests; nongenotoxic (vs the 6-acetate impurity concern) |
| van Eyk AD 2015 · Drug Chem Toxicol | in-vitro | mixed | low | Five artificial sweeteners incl sucralose caused morphological change and DNA fragmentation preferentially in Caco-2/HT-29 colon cells; mechanism unclear |
| Elmore SA, Rehg JE, Schoeb TR, Everitt JI, Bolon B 2024 · Food Chem Toxicol | observational | contradicts | moderate | Pathologists find design flaws in the sucralose Ramazzini carcinogenicity bioassay underpinning DNA-damage claims |
| Heredia-García G, Gómez-Oliván LM, Orozco-Hernández JM, Luja-Mondragón M, Islas-Flores H, SanJuan-Reyes N, Galar-Martínez M, García-Medina S, Dublán-García O 2019 · Sci Total Environ | in-vitro | supports | low | Sucralose at environmentally-relevant concentrations induced DNA alterations, apoptosis and oxidative stress in common-carp blood cells |
| EFSA Panel on Food Additives and Flavourings (FAF), Castle L, Andreassen M, Aquilina G, Bastos ML, Boon P, Fallico B, FitzGerald R, Fernandez MJF, Grasl-Kraupp B, Gundert-Remy U, Gürtler R, Houdeau E, Kurek M, Louro H, Morales P, Passamonti S, Batke M, Dourus A, Chipman J, Crebelli R, Fürst P, Halldorsson T, Mirat M, Mortensen A, Wright M, Lindtner O, Barmaz S, Civitella C, Horvath Z, Levorato S, Mazzoli E, Rasinger JD, Rincon AM, Smeraldi C, Tard A, Lodi F 2026 · EFSA J | in-vitro | contradicts | high | EFSA2026 reeval: 2 S6A studies negative; NO genotoxicity concern; Schiffman2023 deemed not decisive |
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