Sorry, but there's no evidence to back up the "living 5 to ten years less" claim. Whilst there are signs of, perhaps, an increased incidence of some forms of cancer in flight crew one problem the docs have with the research is that the effects are so small it's difficult to measure. They'd sure as heck be aware of an increased mortality like that........
IMHO you should be more concerned about shift patterns, low humidity, exposure to Ultraviolet Radiation on those long lost tropical slips etc...............or on the other hand you could stay on the ground and get killed in a car crash on the daily commute.