Obesity has become a pervasive problem in the U.S (and parts of the rest of the world). The average waistline of American adult males is now 40.5 inches![https://www.cdc.gov/nchs/fastats/body-measurements.htm] That is jaw-dropping to me. I live in a U.S. state that is well-known for being one of the thinnest states in the country, and people don't seem particularly thin to me here - but when I visit other parts of the country, the obesity is pervasive and extreme. (No need to name states - there are numerous maps of obesity rates online.)
There are strong indicators of several causes for this, but America really needs to get serious about health and overall wellness of the population.