In an interesting study that appeared in the Journal Biodemography and Social Biology done at a center for aging, NORC at the University of Chicago, Chicago, Illinois, USA, researchers Gavrilov LA and Gavrilova NS explored the effects of early-life and mid-life conditions on exceptional longevity using two matched case control studies.
Results of their First study showed that Siblings born to young mothers (aged less than 25 years) had significantly higher chances of living to 100 compared to siblings born to older mothers (OR = 2.03). Also noteworthy was that the Birth order and Paternal age were not associated with exceptional longevity.
Results of their Second study showed, among men at age 30 years, a Negative association between "stout" body build (being in the heaviest 15% of the population) and survival to age 100. Being a "farmer" and a father of 4 or more children by age 30 years was also associated with exceptional longevity. Also noteworthy was the fact that centenarians were not concentrated among the tallest men at age 30. In fact most of them were medium height, although these height differences were not statistically significant.
This is great news for children of today's young mothers and normal weight men coming from this landmark Biodemograpic study exploring early and mid-life predictors of exceptional Longevity.
Paternal Age and Birth order was not found to be a factor for exceptional longevity!
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Dr. Harish Malik