New study links cosmic radiation to higher cancer death risk in flight crews

A new study indicates that flight attendants and pilots face the highest risk of death from radiation-related cancers, exceeding even those who work with radioactive materials. This increased risk is attributed to greater exposure to cosmic radiation, which originates from space and is more prevalent at high altitudes. Previous research had suggested a link between frequent flying and higher cancer death rates for aviation personnel, but this new study provides significant new evidence. The findings were discussed in an accompanying commentary by two Australian radiation experts.

A new study published in JAMA Internal Medicine found that flight attendants and pilots have the highest risk of dying from radiation-related cancers compared to over 500 other occupations. Analyzing over 12 million death certificates, researchers determined that flight attendants had a 50% higher chance of dying from these cancers, with pilots at 36% higher odds than the general working population. This increased risk is attributed to greater exposure to cosmic radiation at high altitudes. While the study acknowledges limitations such as unknown individual exposure levels and potential impacts of jet lag, experts suggest annual skin exams and earlier mammograms for flight crews. The Federal Aviation Administration currently does not set dose limits or require monitoring for aircrews' radiation exposure.