Introduction to the steps states : a way to recover from the disease of compulsive overeating. So what is compulsive overeating? In general the program never gets around to defining "compulsive overeating" beyond a general concept of , in some form, a drive to eat more than we need. To me this drive seems mainly physiological, but may have an unconscious psychological component. It is in the form of a compulsion, a desire for food, a craving for food that food does not satiate. Therein is the problem.
Through much reading, studying, and debate, the chemical portion seems to be driven by the consumption of sugar, processed carbohydrates, grains, omega 6 oils, and a bunch of other chemicals. When I keep these out of my food supply, the obesity reduces to the overweight/obese line. That is the solution to a portion of the problem. Just do not eat those poisons. But the craving to eat is still there. It is a desire, that cannot be satisfied, and must somehow be dealt with.
The next line says "After years of guilt...", but I no longer have guilt. This culture imposes a view that we should be able to control our eating, but there is a subset of the population that is unable, and looking back in history, there have always been a few that are obese, even among the poor. Why, well nobody has a good answer. It is not us that are wrong, it is the culture that is out to lunch. It is physiological, not a moral failing, as the culture would like to point to. It may be what ever causes an overcharged appetite. So, we need to overcome our culture and our nature. That is a bitch of a problem.
Obesity is a fat storage over burning problem. We get hungry, aka, our body calls for energy, rather than taking the energy from storage, it demands that we eat. As some science type said "High blood glucose elicits the release of insulin which speeds the uptake of glucose by tissues and favors the storage of fuels as glycogen and triaglycerols while inhibiting fatty acid mobilisation in adipose tissue.", all of which suggests hyperinsulinema as a cause. We need to deal with the physical causes before we can address the psychological causes.