Can aspartame in diet foods promote ovarian cancer?
Possibly. A multi-omics study found genetic and molecular evidence linking aspartame to ovarian cancer progression.
What's actually in it
Aspartame is an artificial sweetener in diet sodas, sugar-free candy, low-calorie yogurt, protein bars, and chewing gum. It's one of the most consumed artificial sweeteners in the world. Your body breaks it down into phenylalanine, aspartic acid, and methanol.
The WHO classified aspartame as "possibly carcinogenic" in 2023. Since then, more studies have explored specific cancer links.
What the research says
A 2026 study in Food Chem Toxicol used multiple approaches to test whether aspartame promotes ovarian cancer. They combined genetic analysis (Mendelian randomization), molecular network mapping, and cell experiments.
The genetic analysis found a causal association between aspartame-related metabolites and ovarian cancer risk. This isn't just a correlation; the genetic evidence suggests a causal direction.
In lab tests, aspartame promoted ovarian cancer cell growth and survival by activating specific molecular pathways involved in cancer progression.
The study combined multiple lines of evidence pointing in the same direction. While more research is needed, the consistency of the findings across different methods is concerning.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Aspartame promotes ovarian cancer progression: A multi-omics study integrating mendelian randomization, network toxicology, and in vitro validation. | Food Chem Toxicol | 2026 |
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