I can't believe I'm grabbing a slice of pizza as I sit down to write this.

Flashback to age 12 or 13, when I threw tantrums to protest Mom taking me to after-church gatherings, which were always small and intimate. Everyone noticed when you didn't eat your allotted two slices—something that became a problem for me early on.

'It's not about the food'

Eating disorders—or, more broadly, disordered eating—fall along a spectrum. They adapt and change throughout time, and are about more than just a "silly" fear of being fat.

The Diagnostic and Statistical Manual of Mental Disorders 5—which as a now-graduate student in psychology, I open like the morning paper—is a big book used to diagnose psychiatric illnesses. It places "feeding and eating disorders" into eight categories, a strategy that carries its pros and cons. Having names for these things can be both clarifying and stifling.

The most well-known disorders are likely the big three: anorexia nervosa, bulimia nervosa and binge-eating disorder. Though disordered eating is their common denominator,