Acesulfame potassium and cancer evidence in lab and animal studies
What it found
In lab and animal tests, acesulfame potassium showed little sign of activity linked to cancer.
The authors say it is unlikely to cause cancer.
What they found
Animal and lab studies
Tumours in rodents
Rodent bioassays showed no treatment-related tumour effects.
Studies in people and animals
Overall activity
Across the cancer-related endpoints studied, there was a lack of activity. The overall integrated score was below zero, and no endpoint was categorised as showing strong evidence of activity.
Other findings
Strength of evidence
The authors combined many different data streams and weighed factors like reliability, strength of the model system, activity and dose. They concluded that acesulfame potassium is unlikely to cause a cancer response.
What the authors conclude
“Overall, there was a lack of activity across the KCCs (overall integrated score <0 and no "strong" categorization for evidence of activity) in which data were identified.”
Also in their conclusions
- They conclude that acesulfame potassium is unlikely to induce a carcinogenic response.
- Their assessment integrated mechanistic data into the totality of the evidence and found a lack of activity across the key characteristics of carcinogens.
How it was done
The safety of low- and no-calorie sweeteners is a topic of general interest, and the authors wanted to assess the evidence on whether acesulfame potassium could cause cancer.
They assessed over 800 endpoints related to key characteristics of carcinogens from a variety of lab and animal tests. They scored each for quality, relevance and activity, then combined the scores to judge how strongly the data supported the idea that acesulfame potassium acts through these cancer-related pathways.
What it can’t tell you
- We summarised it from the abstract only.
- This assessment is based on lab and animal studies, so it cannot show what happens in people.
- It cannot prove that acesulfame potassium never causes cancer in any situation.
Who paid
- Conflicts
- Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: This work was funded by the American Beverage Association. No authors received personal reviews. ToxStrategies regularly provides consulting services related to food and beverage safety, including sweeteners, to various entities within the private sector.
The paper
- Title
- Lack of potential carcinogenicity for acesulfame potassium - Systematic evaluation and integration of mechanistic data into the totality of the evidence
- Type
- Systematic review
- Evidence
- Studies in people · animals · lab
- Summarised from
- Abstract only
- Cite
- Chappell GA, Wikoff DS, Doepker CL, Borghoff SJ (2020). Lack of potential carcinogenicity for acesulfame potassium - Systematic evaluation and integration of mechanistic data into the totality of the evidence. Food and chemical toxicology. doi:10.1016/j.fct.2020.111375PubMed 32360221DOI
Summary written 26 Sep 2026. Check it against the paper before it changes what you eat. How we summarise papers · Report an error