My two cents about Southern fatness is that the South until very recently was still rural and farm based. The diet was based on fatty foods which was ok when you were doing manual labor. But then people moved to the city, the mules got replaced with tractors, John Deere's of course,

, but they kept eating the old food. Also we got richer and comodities got cheaper. Having fried chicken was a luxury not an every day meal. Meat in general was expensive and used to flavor not the main course.
Then there is The Great Corn Sweetner Conspiracy!
Which may have some truth. When I was a kid there were very few fat kids in class. Maybe 1-3 in a class of 30+ I see lots of fat kids in school today. At least 1/3 to 1/2 of the class. Besides lack of excercise, corn syrup has replaced cane sugar in most process food. There has been some research that corn syrup turns off the body's ability to know its full. So you keep eating.
I was looking to see how many Soda's in the grocery store use cane sugar vs corn syrup. Only found one maybe two brands. I think Jones use cane sugar. What is real interesting is their product is the same price or less as the sodas using corn syrup. I guess there is more profit in corn syrup.
I had plenty of sodas and junk food in the house growing up but I did not gain weight until I was 25, going to school full time, workng full time and eating what was cheapest.
The other thing about gaining the poundage is that its does not take much overeating to get 10-20 extra pounds a year. A can of soda a day that takes you over the number of calories you consume, gets you 10-20 pounds at the end of the year. Do this for a few years.....
I still need to loose some poundage but I'm not gaining. Years ago I slowly reduced what I ate at work. The desert went first. Then the fries. Then hamburger. Today I get a biscuit with one egg and sausage and a scone. That is all I eat all day. Half of the scone usually gets thrown away at the end of the day. I keep cups of fruit at work. If there are no scones I eat the fruit midday.
We do have fatness epidemic in the western world. We went to Disney World last fall and spring. Our last visit was in 1999.
What really stood out to us was how many people were using strollers to push around kids aged 5-12. As well as the number of people using powered scooters. And how fat the adults and worse, the kids, had become. It was shocking. One day we were riding the bus back to the resort and there was an English family across from us. The son was 12ish and very nice. Mommy this. Mommy that. Very cute. I noticed that his ankles where covered in flesh and I was trying to figure out if the kid was just fat or if he already had Chronic Heart Disease.
We were in line at the resort to get some lunch one day. There was a family of four in front of us. The daughter was 12-14 and was wearing a Griffyndor shirt. The son was 10ish and wearing a Slytherin shirt. For those who know nothing about Harry Potter, Griffyndor's are nice heroic types. Slytherin's are selfesh, spoiled, rude, liars who cannot be trusted. The son, remember he is 10ish, orders a doulbe cheese burger and a double order of fries. The parents try to talk him out of it. He pitches a fit. Sis walks away with the I don't know them look. The parents eventually relented, he wins and gets the food. To say he was fat would be kind.

And the brother and sister had picked shirts that matched their personalities.
My last fat WDW story. We went to EPCOT one evening and started to walk around the World Showcase which I think is two miles around. Just before we get to the lake a man who must have weighed 500 pounds rode by on a powered scooters. Lots of these at WDW. About 10 feet behind him, struggling to keep up is his daughter who is 10-12 and has to be at least 150-175. She is red faced, breathing hard, and really hurting. I'm guessing she just walked two miles while he rode his scooter. Fatso was yelling at her to hurry up. I wanted to have a strenuous chat with him but I'm on vacation at the Happiest Place On Earth so we kept walking...
We walk around the World.

Stopped in Mexico for dinner since we had already eaten in Japan.

s we got close to were we first saw the fat man yelling at his daugher, we see two scooters zipping through the crowd. The first one has a kid 10-12 who is very fat. The scooter following was his mom who was in the 300-400 pound range. She was holding another child maybe 6-8 that was 100+ pounds.
WDW is having to rebuild some of the rides that use boats. Why? People have gotten much larger since the rides where built in 70/71 and HEAVIER. Some of the rides can "bottom" out, pun intended, because people are so much heavier. WDW can't get as many people on the boats because they can't fit as many people on the rides as they used too.
I read a comment on a WDW website a year or so ago, that obesity in children was child abuse. I thought that comment was a bit to harsh. Not anymore.
If we think health care costs alot today wait until these kids get a few years older and they are having strokes, heart attacks, and diabetes.
Later,
Dan