What is the secret to a long life? A healthy life style, good nutrition, few worries, few risks, little stress. That is all obvious. When you look at data, life-span has a very high correlation with income, education, and other measures of standard of living. Of course, none of this implies causation, if fact one may think that an expected longer lifespan leads people to get more education. Enter the twin studies.
Petter Lundborg, Carl Hampus Lyttkens and Paul Nystedt use twins, who have the same genes and where subject to the same starting conditions, to disentangle what leads to longer lives. Education comes here as a clear winner. Even differences between twins like birth weight cannot make this disappear. Having more than 12 years of education gives you a bonus of 2-3 years, whether male or female.
Petter Lundborg, Carl Hampus Lyttkens and Paul Nystedt use twins, who have the same genes and where subject to the same starting conditions, to disentangle what leads to longer lives. Education comes here as a clear winner. Even differences between twins like birth weight cannot make this disappear. Having more than 12 years of education gives you a bonus of 2-3 years, whether male or female.
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