EDs dont exist

i just had to mention a recent convo i had with a work collegue
we were talking about eating disorders and he said eating disorders dont exist,its just a made up mental health condition for people who are just funny eaters,people chose their body shapes.people chose whether they are bulimics or anorexics and they can stop it at any time,they are just attention seekers,its not a true mental health disorder.
i know for a fact eating disorders is a way of dealing with emotions rather then a want to be extremly thin,i know for a fact that i dont see dead thin models and want to be like that.
i know there are different reasons why people have eating disorders
some use it as a form of control,some generally think they are fat when they arent,some are in the middle
some know they aint fat but fear becomin fat
my work collegue whos a psych nurse used to work with people with EDs told me that i did have some form of ED though she wasnt sure what type but she knows i am not the type thats deluded in thinkin that i am fat when i am not but i am the type thats afraid of becoming fat and that i use food as a form of control.does anyone get what i mean here