I think we're using the term "eating disorder" pretty loosely here. I grew up with an anorexic mother and she was pure-D nuts when it came to food and body image. She worried about being too thin--not uncommon among anorexics,though the stereotype is one who worries about being too fat--yet she ate so sparingly or not at all that she suffered from catastrophic weight loss. She was 5'6" and small-boned; whenever she dropped below 80 lbs. her doc would put her in the hospital to supervise her eating and get her weight back up. Once she called me to tell me of this new "diet" guaranteed to put weight on. It consisted of boiling vegetables in water, then throwing the vegetables out and drinking the water. She seemed to think of food as "dirty" and as she grew older, became convinced it was harmful to her.
As the only other female in the family, I came under scrutiny and my food intake was restricted. At 12 I was diagnosed with malnutrition. Once when my younger son was visiting her--he was an infant--I called to see how the visit was going and heard him crying in the background. I asked why he was crying and she said she supposed he was hungry and when I asked why she didn't feed him, she replied that he was so fat that watching him eat made her nauseated. He was six months old and in the 50th percentile for weight, so absolutely normal, but she had put me on my first "diet" at six months of age. Anyway, I rushed to her house, picked him up and never left him alone with her again.
She finally managed to starve herself to death at age 73, about 4 months after my father's death.
Now that, my friends, is an eating disorder. I don't know if my mother was an NFJ; she was too crazy to type, really.
I have made an effort to have a healthy attitude toward food, and though I do have some stuff around categories of "clean" vs "dirty" foods, I eat pretty normally unless I'm manic. During manias I tend to stop eating or sleeping and drop a lot of weight--like 20 lbs a month--but have never dropped below 100 lbs. (I'm 5'7" with a medium frame). When stressed, I will go days without eating or sleeping, but usually catch it early and force myself to eat healthy foods again, even if I can't sleep. I recently joined Weight Watchers to try to establish a healthier relationship with food and I think it's helped. I do not consider myself to have an eating disorder, though I know I'm at risk for developing one.
