Does anyone know? There seem to be many different definitions depending on where I google.
Reading this article, I find it hard not to focus solely on my own belief that all carbohydrates, and sucrose/fructose/glucose in particular are extremely addictive. This article even compares, using dopamine, smoking with "temptation for food." I'm fairly sure that anytime someone is "tempted for food", that there are carbohydrates involved, but obviously it's hard to know without that original formal definition.