As a diabetic on an insulin pump, I can say I was treated better in the UK than in the US as far as airport security goes. When I passed through security at Glasgow, I was nicely asked what the device was on my belt. I informed them that it was an insulin pump (No I don't carry a note from a Doctor, security gates don't pay attention to them, and for good reason) They had me show them that it was indeed a pump, and had me change the menu and then sent me on my way. In ATL, I literally had the pump "ripped" from my stomach! I notified them that I was a diabetic on a pump that is attached to my abdomen with a tube, she then proceeded to yank it off my belt and rip the tubing from my abdomen. Of course I grabbed her arm to get it back which got me detained in the backroom and treated like a criminal until the supervisor finally cleared me. No apology was given.