White American here. In the past 3-4 years (probably a couple dozen flights) I have gotten some level of patdowns and hand-swabs literally every single time I g

White American here. In the past 3-4 years (probably a couple dozen flights) I have gotten some level of patdowns and hand-swabs literally every single time I go through one of those millimeter-wave machines. Every time, without fail. My belief is that it's because I had gone through some pretty substantial weight loss in the past, and so my body skin/muscle/fat density is all screwy around the midsection, and thus it sets the machine off.