There is a real epidemic of obesity! I hadn't noticed until last summer, when the county historical society asked me to spend a day manning their booth at the county fair. Their display was on county schools of yesteryear, complete with class photos. I was completely dumbfounded to see those photos! Whole graduating classes with nary an obese person. In my HS graduating class (1954), we had one gal (out of 96) that could classify as narrowly obese.
Just take a look..go to.. Google images ..and type in something like "graduating class 1922" and see the class photos...compare with what you see in today's neighborhoods.
My brother, a recently retired coach who still coaches college soccer etc. on a part time basis and tours Europe each summer, says we are not alone. Europe has the same problem. He blames it on improper nutrition and too much video games.
Here for instance, is a graduating class of 1957 in Bullitt co. KY, which I just pulled from the internet: