Great links in this thread. Re the fat map: I was in Ireland a few years ago and was struck by how there weren't many fatties. At least as compared to the US.
Keep in mind though that those really lump all national demographics into one. Things are broken down further and more meaningfully by locality, race, socioeconomic status, etc. If you're in Mississippi in a predominantly poor black section of town, you're going to see probably 75% obesity. Whereas if you're in the Hollywood Hills in the rich section of town, it's going to be super low.
Furthermore, if you look at some parts of the globe it's skewed in the other direction: people are actually starving, hence their trim waistlines. eg., Ethiopia. I doubt they're so thin because they're all on treadmills and doing Zumba every day.
Also, not really sure "feminists" are to blame for obesity, since a number of the "fatter" countries -- namely Egypt, Turkey, Saudi Arabia, and Iran -- aren't exactly known as bastions of feminism.
