The cause of American longevity can be seen in your mirror.
Rocca
Peter V
PV
D015438:Health Behavior; D006801:Humans; D007223:Infant; D007226:Infant Mortality / Q000639:trends; D007231:Infant, Newborn; D008017:Life Expectancy; D008136:Longevity; D014481:United States / Q000453:epidemiology