In the INTERPHONE study, the 10% of people who used their cell phones the most had a small increase in the risk of a certain type of brain tumor.
Notes on verification
Confirmed by official IARC/Interphone press release, NCI fact sheet, and independent secondary sources reporting an OR of 1.40 for glioma among heaviest users. Causal interpretation remains debated due to acknowledged recall/reporting bias, but the empirical finding as stated is well corroborated. [cascade flags: wikipedia_dropped_other_sources_exist | tier=silver indep_score=0.867 clusters=3 claim_tier=notable]
Sources
- Do Cell Phones Raise Your Risk of Cancer? - WebMD (seed:health_and_medicine)
- https://www.isglobal.org/en/-/interphone-study-reports-on-mobile-phone-use-and-brain-cancer-risk (corroboration)
- https://www.cancer.gov/about-cancer/causes-prevention/risk/radiation/cell-phones-fact-sheet (corroboration)
- https://interphone.iarc.fr/pr200-e.pdf (corroboration)