Myth-buster
A meta-analysis of genetic studies found coffee consumption had no statistically significant link to liver cancer risk (OR 0.92, 95% CI 0.58–1.47) — challenging earlier observational reports that suggested a protective effect.
This is among the first indexed studies using genetic data to test the coffee–liver cancer link, so the null result casts doubt on the previously believed benefit but doesn't settle the debate — more research is needed before changing any habits.
Researchers pooled data from Mendelian randomization studies — which use genetic variants as a proxy for coffee intake — and found no causal relationship between coffee drinking and the risk of hepatocellular carcinoma, the most common type of liver cancer. The odds ratio of 0.92 was not statistically significant, meaning the result could easily be due to chance. Because this is early evidence using a different method than typical observational studies, the findings should be treated as a cautionary note rather than a definitive conclusion.
Where this fits in the evidence
This is among the first studies we've indexed on Coffee for Reduced Hepatocellular Carcinoma Risk — treat it as an early signal until more research accumulates.
The study
- Meta-Analysis
- 2025-08-25
- Gut and liver
- PubMed: 40852740
- DOI: 10.5009/gnl250227
- Full study breakdown →
This is a plain-language summary of a research finding, not medical advice. Pillser surfaces research signals to help you decide what's worth investigating — always consult a qualified professional before changing what you take.