French Court Links Cosmic Radiation to Flight Attendant's Breast Cancer

A French court has for the first time recognized cosmic radiation as an occupational factor in a flight attendant's breast cancer, alongside passive smoking and long-term night shift work. The ruling could open the door for similar lawsuits, as research consistently links prolonged high-altitude flying to elevated radiation-related cancer exposure. Sophie Lainault, a 59-year-old former Air France flight attendant, sought to have her cancer recognized as an occupational disease, attributing it to her work environment.

Starting as a flight attendant and later becoming a chief purser, she accumulated 12,600 flight hours between 1989 and 2019, with over half on night shifts. Long-haul flights departing from Paris typically use polar routes, where the magnetic shielding is weaker, resulting in higher radiation exposure levels. A study published this month by Harvard Medical School found that among more than 500 professions, flight attendants and pilots have the highest mortality rates from radiation-related cancers.

The analysis showed that approximately 6.9% of deaths among flight attendants and 6.7% among pilots were attributed to radiation-related cancers.