I've lived in South Texas, Washington State, Missouri, and Tennessee, and I don't really recall a difference in overall portion size at restaurants, fast food l

I've lived in South Texas, Washington State, Missouri, and Tennessee, and I don't really recall a difference in overall portion size at restaurants, fast food locations, or typical diners. A lot of the popular chains have standardized their menus, so you can usually pull up the online menu and check out the nutritional data. For international chains, it might be interesting to compare overall calorie counts if the region specific menus are available?