In 1960, when vastly more Americans were involved in physical labor of some kind, 0.65% of workforce participants between the ages of 18 and 64 were receiving Social Security disability insurance payments. Fifty years later, in a much healthier America that number has grown to 5.6%.
I am not sure it is a healthier America, even though people seem to live longer. Apparently todays generation will be the first generation that doesn’t live longer than its parents.
When it comes to war fighting, the military didn’t seem to have a problem finding recruits to fight our wars in the 60’s, but it is now estimated that 75% of military aged people of this generation would be unfit for the military draft.
In a kind of “Forrest Gump” kind of logic, healthy is as healthy does.