LogFAQs > #914466522

Anthropological? In a culture of excess most people have lost their innate hunger cues. Most people can't tell when they're actually hungry or full, and eat more out of habit. There's also a thing called mindful eating -- which is focusing your thoughts and energy strictly on eating and not other distractions. This is a big part of diabetes education, for example. Not eating as a family or unit, and doing things while you're eating causes people to overeat.
A departure from strict food cultures has caused plenty of people to not grow up learning how to cook well. You can make tons of jokes like "lol it's not hard to throw chicken in an oven and boil some broccoli" or whatever other ignorant thing CEmen would say -- but that's not something that's appealing to everyone.

Sociological and/or economic? Eating on the go -- a culture that doesn't emphasize eating as an event or gathering. A lack of food education, cooking education, food safety education, basic nutrition education. Conflicting information bombarding consumers. Food accesibility. A culture based on the virtues of "personal responsibility" (idiots like 100# CEmen grasping their Ayn Rand books close to heart) making it difficult to fund or promote social programs to help with education or food accessibility (Obama did so much in these areas and already tons of it is getting reversed). The idea of limited trunk space, especially in areas where people rely on public transportation. Public transportation routes. Grocers avoiding development in lower income areas. "Health food" being a boogeyman word in certain communities. Etc. Etc.

All of the psychological causes are being terribly oversimplified, too. Yes - disordered eating is an eating disorder.
But you're also ignoring eating as a means of coping, stress eating, etc. Eating for tons and tons of psychological reasons -- like people who have eating disorders where they'll only eat the same foods for comfort, people with autism not cooking themselves because they like the reliability and dependability of eating out (especially chains).

I studied food and nutrition and work in the field. Don't front about shit you don't devote your life to learning