YES! AM can be almost as harmful as cocaine. I got addicted to 6 meter AM
back about 1978. Spent almost a year trying to make a local net using an
ancient kit somebody had cobbed together. It had some special need sensor
that allowed it to work FB until it was my turn to check in then nothing
..... til the net was over. Drove me to kicking the dog!

Oh! You meant PHYSICAL harm. Sorry .....