Thoughts on Obesity, Part I

From the US Centers for Disease Control website:Since the mid-seventies, the prevalence of overweight and obesity has increased sharply for both adults and children. Data from two NHANES surveys show that among adults aged 20–74 years the prevalence of obesity increased from 15.0% (in the 1976–1980 survey) to 32.9% (in the 2003–2004 survey). In hunter-gatherer and some semi-agricultural societies, obesity is rare. In most, it's nonexistent....