Originally Posted by etudiant
Think the crew personnel is the most affected, they spend a lot of time aloft.
I've not seen any data on possible health hazards though, even though that really should be a concern for the industry and especially for the unions.
The radiation risks to long-term airline pilots are well known and documented. My father, a 33 year commercial veteran with over 24,000 hrs, suffers a variety of symptoms including osteoporosis. However, since he turns 90 next month, apparently the problems haven't been too severe :)