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Flight Crews Face Higher Cancer Risk
20 Aug
Summary
- Pilots and flight attendants show highest cancer death rates from radiation.
- Aircrew receive highest annual radiation dose from cosmic rays.
- Study links radiation exposure to specific cancers in flight personnel.
Flight attendants and pilots face the highest risks of radiation-related cancer deaths among over 500 U.S. occupations, according to a study in JAMA Internal Medicine. Analyzing nearly 13 million death certificates from 2020-2024, researchers found elevated mortality rates for cancers linked to radiation, including breast, prostate, and central nervous system cancers, as well as melanoma.
The study's authors attribute this increased risk to the significant annual effective dose of ionizing radiation encountered by aircrew members, primarily from cosmic rays at commercial flight altitudes. This exposure is a growing concern for public health experts and federal agencies.
While the study highlights a 50 percent higher adjusted odds of radiation-related cancer deaths for flight attendants and 36 percent for pilots compared to other professions, experts caution against definitively establishing causation. Data limitations, such as the absence of individual radiation dose measurements and other lifestyle factors, prevent direct extrapolation from association to cause.
Experts stress that findings do not necessarily prove cosmic radiation as the direct cause of death. Factors like cumulative flight hours, sleep disruption, and UV exposure may also play roles. Therefore, the focus should be on improving monitoring of occupational radiation exposure rather than immediate changes to cancer screening recommendations.
