:D hii

yes,the answer is bulimia,dentists know this because bulimia causes your teeth to rot and causes damage to your gums.This is how they know if you are a bulimic.Dentists study this while learning to be a dentist.

BTW,they can also sometimes tell if you are anorexic too just by looking at you,but they won't judge.But yeah,the answer in mainely bulimia because that's something that dentists study so they know if you are a bulimic by looking at your teeth and gums.Th...