The Claim
High dietary intake of N-nitrosodimethylamine (NDMA) is associated with a 34% increased risk of gastric cancer, as demonstrated by a meta-analysis of 11 studies comprising 742,038 participants, with a summary relative risk of 1.34 (95% CI: 1.02–1.76) comparing highest versus lowest intake categories.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Eating a lot of a chemical called NDMA in food might raise your chance of getting stomach cancer by about one-third, based on a big review of studies.
See the scientific wording
High dietary NDMA (N-nitrosodimethylamine) intake is associated with a 34% increased risk of gastric cancer when comparing the highest versus lowest intake categories (summary relative risk: 1.34, 95% CI: 1.02–1.76), based on a meta-analysis of 11 studies including 742,038 participants. Significant heterogeneity was present, and the association was stronger in case-control studies than in cohort studies.
What the research says
1 studyStudy: Dietary Nitrates, Nitrites, and Nitrosamines Intake and the Risk of Gastric Cancer: A Meta-Analysis
This study looked at the same thing as the claim—how eating foods with NDMA affects stomach cancer risk—and found the exact same 34% increase in risk, so it supports the claim.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.