Radiation bombards airline passengers and airline crew. You may download this page but you may not link it inside frames, repost it, or sell it without permission. Flight attendants are two times more likely to contract breast cancer than women who do not fly regularly.
Flight attendants suffer a significant increased incidence of bone cancer.
The 1995 Finnish study speculates that in-flight radiation may be the cause of the breast and bone cancers among flight attendants. Most in-flight radiation originates from the Sun. At this point, there is only limited advice for airline passengers from scientists. Pregnant women should not fly. Orbiting astronauts should stay inside their shielded craft.