If it's any consilation, even the security guys have to screen before they work in the sterile area.
The best way I found was to not step in the middle of the machine and keep moving through reasonably quickly.
It doesn't matter if you have shoes with a reduced metal content if you are carrying a pack of smokes, huge belt buckle and $7.40 in loose change. The detectors read the total metal content on your person. (I wear "SWAT Originals" - zip sides so if I do have to take them off it only takes 5 seconds)
The number of female pax who I have seen complaining their bangles were gold......
Bangles, no matter how thin, tend to concentrate a magnetic field and will trip 99% of the time on their own.