This NY Times story suggests research strongly indicates that the amount of education one has is an important determinant for health and living longer. But, so many other factors play into the equation that certainty is elusive. The chicken-egg factor comes into play frequently. The factors of race, genes, social connections and lifestyle play heavily into the mix.
"There are some important findings: Health and nutrition early in life, even prenatally, can affect health in middle and old age and can affect how long people live.
For the most part, genes have little effect on life spans. Controlling heart disease risk factors, like smoking, cholesterol, blood pressure and diabetes, pays off in a more vigorous old age and a longer life. And it seems increasingly likely that education plays a major role in health and life spans."
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