Airline pilots who have flown for many years may be at risk of DNA damage from prolonged exposure to cosmic ionising radiation, suggests a study published ahead of print in Occupational and Environmental Medicine.
The research team compared the rate of chromosomal (DNA) abnormalities in blood samples taken from 83 airline pilots and 50 university faculty members from the same US city.
The two groups were matched for age (35 to 56), sex (male), and smoking habit (light or non-smokers). Age and smoking are known risk factors for cumulative DNA damage.