Cosmic Radiation Linked to Higher Cancer Death Risk for Pilots and Flight Attendants

A JAMA Internal Medicine study analyzing nearly 13 million US deaths (2020–2024) across 503 occupations found pilots and flight attendants had the highest shares of radiation‑related cancer deaths, with flight attendants about 1.5 times and pilots about 1.36 times more likely to die from these cancers than workers overall. The pattern spanned multiple radiation‑linked cancers, but experts caution that this is an association, not causation, and important data such as cumulative flight hours, specific radiation doses, routes, and lifestyle factors were not available. The study underscores a need for better monitoring of occupational radiation exposure and long‑term research, rather than immediate changes to cancer screening guidelines.