Study Finds U.S. Aircrew Have Highest Share of Radiation‑Linked Cancer Deaths

Overview

• A JAMA Internal Medicine analysis of nearly 13 million U.S. death records found that flight attendants had the highest share of deaths from cancers linked to ionizing radiation and pilots ranked second, a finding published in mid‑August and widely reported on Wednesday.
• The study found 6.9% of flight attendant deaths and 6.7% of pilot deaths were from radiation‑associated cancers, compared with about 5% across the overall working population.
• After adjusting for age, sex, race, education and marital status, researchers calculated about a 50% greater odds for flight attendants and about a 36% greater odds for pilots of dying from radiation‑related cancers versus other workers.
• Authors and outside experts point to cumulative cosmic radiation at cruise altitudes as a plausible exposure source, estimating aircrew receive roughly 3 to 6 millisieverts per year depending on routes and flight hours.
• The paper cannot prove causation because individual career doses and some work‑related risks such as disrupted sleep could not be measured, and the finding has renewed union and scientific calls for routine dose monitoring, better recordkeeping, targeted screening and policy review while U.S. regulations remain unchanged.