thinking on the fact that a huge percentage of American adults are overweight or obese, I would probably agree that "most food around" is super-stimulating.

Sigh. So you really think that the cause of obesity is that food is just too yummy, too attractive?

Before you answer, think about different countries, other than US. Japan, maybe? France?

Pizza tastes good enough to most people that it's difficult to resist the urge to over-eat. That's my answer.

Please use the Principle of Charity if you engage me. When I assert that "pizza tastes really good," you know what I mean.

Please try to avoid the typical mind fallacy. People around me don't seem to have the urge to overeat pizza. A lot of them just don't like it, others might eat a slice once in a while but no more. Nobody is obsessed with pizza and I doubt many will agree that "pizza tastes really good" -- they'll either say "it depends" or shrug and say that pizza is basic cheap food, to be grabbed on the run when hungry.

No one -- not a single person around me -- shows signs of having to exert significant will power to avoid stuffing her face with pizza.

Do you agree that there exist certain foods which taste really good; which a lot of people have a problem with, which in many ways are like an addiction?

Presumably there is a logical "AND" between you sentence parts. Depends on what do you mean by "taste really good" (see above about pizza) and by "a lot".

People generally overeat not because the food is too yummy. People generally overeat for hormonal and psychological reasons.