>>17995006It's not. Autism didn't have a scientific definition until the 2000's. That's why so many people started getting diagnosed, even though most of them exhibited the same behavior as people from the 80's and 90's.
Obesity increased because Americans stopped being as active and started eating thousands of calories of food with absolutely zero mutrional value. You can look it up. Average energy expenditure decreased over time, while average caloric intake skyrocketed. Combine that with a failing education system, collapsed economy and people stopped prioritizing their health.
