Commenter Bern has left a link to a letter to Dr. John Holdren on the radiation dangers of the body scanners.
I can't copy the text (the pdf is locked) so let me give you a couple of salient points that illustrate the dangers. These are dangers that have not been tested for:
Item A) Skin cancer in older folks.
Item B) Breast Cancer (women)
Item G) Sperm mutations
Me? I'm not getting on an airplane for any reason. If I can't drive I'm not going.
http://www.npr.org/assets/news/2010/05/17/concern.pdf