If a doctor wanted to use these body scanners for medical reasons, the FDA would say they're unproven for safety. Opt out, your future non-cancerous self will thank you!
Which would you rather? Less screening and unsafe flights? If you don't like how persons and baggage is screened, Amtrak and Greyhound would be delighted to have you.
Don't accidentally leave anything in your bag they won't allow, you have to go thru security again to mail it to yourself. They consider missing your plane a viable option for being forgetful.
This is the most ridiculous security checkpoint I have ever been through both in the states and abroad. Prepare to be basically strip searches by idiots who can't think for themselves.