When I was in H.S. (mid 70's) we had all the snack food machines and so on. The major problem was tooth decay.
The cafeteria served foods that could only be described as fattening. The bad kids ran off to the local Dairy Queen and ate even worse stuff.
Yet most of us were not grossly overweight.
Of course, the lifestyle was different then. 3 boring TV channels. (Let's go out!) No Internet, no video games, no VCRS, no couch-potatoes. Maybe that had something to do with it.
Exactly. In those days, you spent evenings running around the neighborhood with other kids your age, playing football, basketball, baseball, hide-and-seek, tag, whatever, until your mother called you in for dinner or for bedtime. Today, kids spend their evenings staring at 200+ channels of DirecTV, surfing the Internet, playing PS2, watching DVDs, etc, etc, etc. Plus, the first thing that gets cut from public school budgets is physical education.