> It's really hard to explain to someone the agony of being hungry all the time - without experiencing it, they just cant understand.

This can easily happen if you eat the wrong food and train your gut to prefer the wrong types of food.

And by "wrong food" I mean the typical American diet -- processed food and soda.

"processed" food is fine - all food is processed. The issue is with huge amounts of fast carbs coupled with high fat. It can occur even with "unprocessed" foods such ice cream.