That's funny you say that about Polish women. Because from what I've seen I can't even count the amount of times I see these skinny girls walking around eating these big freakin glazed donut looking things for breakfast lunch and dinner. These donut shops usually have a 30 ft long line to get some glazed donut, mostly women.
I don't really think Polish people care, health wise, about what they eat. Yet, they are all skinny, why?
And why is the United States so much fatter? I dunno, I haven't researched this to back up these claims. But I'd also surmise that United States also has much higher rates of inflammation, arthritis, IBD, IBS, etc... than Eastern European nations. I think the grain in the United States has been so modified the past 50 years it has done something to the point where it cannot be processed properly by a large subset of the population, resulting in massive obesity and health issues.
The United States is the sickest country on the planet. And I don't think you can simply pin this on "over eating." I think the food supply in the US is tainted, especially the grain.