Nerds? I stumble past construction sites and I see many Tradesmen who are overweight, albeit that's occupation-discriminatory ~ there's bound to be a few construction workers who play Dungeon and Dragons.
Likewise, the armies in developed countries are beginning to sound alarm over military obesity. These are occupations where people burn a lot of calories during rigorous things and yet the fatties are abundant these days.
Obesity has doubled since the 1980s (in other countries the increase has been more).
Our diets arguably haven't changed, there was plenty of Coca Cola and hamburgers a couple decades ago. Maybe one difference could between then and now, is the greater accessibility of Mexican cuisine but I don't think that's the culprit.
As well - gasoline use has declined to 25% of what it was in the late 1990s - suggesting that people are driving less. If people walking more means less obesity, right? Wrong - obesity continues to go up regardless of the mode of transportation (feet or automobiles)
If I had to blame the culprit, then it's
- People think the world is going to ruin (the internet doesn't help in accessibility of information) and maybe this is triggering the weight retention gene.
- GMOs in our wheat and crops and the things our livestock eat.
I can say this - when I was in Asia, the cows were skinny just like the people. I ate nonstop beer, soda and greasy food in Asia and managed to lost a ton of weight. It leads me to believe in the 'corrupted food' hypothesis more than anything else. Are you kidding about what you think Asians eat? I was able to get New York Steak and Pizza at every touristy location in Cambodia - hell, even saw a Mexican restaurant.