Marry your cousin to have long-lived kids? Inbreeding is not usually mooted as the key to longevity, but Giuseppe Passarino of the University of Calabria in Rende, Italy, thinks it might be. "Everyone knows that inbreeding is bad - it increases your chances of catching a range of diseases," he says. "But on the other hand, our study suggests that if inbreds don't get those diseases when they're young, they might have a better chance of long life."
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You can read more on the topic of human inbreeding here.
-Don't think too long on this or else you might gross yourself out.
-Why is inbreeding a taboo?
-What does scripture say concerning this issue?
-Even if it would make your children live longer, does that mean that this should be a viable option?
-Why did the royal families not seem to have a problem with it?