You can't tell whether a person has an eating disorder by his or her looks. Some are skinny, some are large, and some are in between. They also have different habits: Anorexics starve themselves, binge eaters overeat, and bulimics do various things with food — some overeat and throw up, some use laxatives or diuretics, some exercise excessively to burn off calories.
But what they all have in common is that the fear of fat rules their lives, and shame about weight or eating behavior permeates their sense of self.
We know that repeatedly bingeing, purging, or starving harms your health, your emotional well-being, and your self-esteem. Plus, secrecy about what you do in private with food can alienate you from others.