If someone asked me, I would think the ED was not as much to do with seminary as it is just being away from home. I know someone who had anorexia and it started in camp. I’m sure shes not the only one. As far as staying safe, I think education and awareness are important. (This can even be helpful if friends and roomates know enough to realize an ED when they see it.)
Anything thats not generally healthy eating can probably be called an eating disorder, so overeating would qualify. IMO, overeating is a lot easier to catch than anorexia or bulimia and though they are all bad, overeating is probably on the “lesser” of the bad.