Jason, please don't post this kind of stuff. The true facts are quite easy to obtain and much of it is on the net.
Flying crew are one of the most closely monitored groups of people on the planet, health-wise. The last properly conducted large-scale long-term review of flying crew showed only one significant health-risk deviation from the normal population. That is a small increase in risk of malignant melanoma - caused, it is thought, not by anything to do with aeroplanes but by the culture of spending hours sitting around hotel swimming pools in the sun.