Originally Posted by
Victor
It's neutral, surely better than inbreeding in some Alabama style or marrying own cousins like some Muslims do. There are villages in Dagestan which have boom of genetic caused ilnesses, because they're literally relatives to each other. It's considered to be bad to marry unknown people from other villages, instead it marrying from own. The level of inbreeding in highland populations of Dagestan is very high, being second only to the world maximum of first cousins on the Fiji Islands.
Chechens are the opposite, they avoid close marriages having some complicated system for it.
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