LogFAQs > #979022201

Smallville posted...

I have read a little in this as well. At least one scientific article which said most people overestimate the damaging effects inbreeding can cause. May be greatly overexaggerate it based on scientific tests that have been done on this

Yea, most stuff concerning inbreeding either come from historic royalty like the pharoahs and various european royalty that did it for hundreds of years and from pop culture like The Hills Have Eyes.
Obviously if you have a hireditary condition you probably don't want to go around baby making with your immediate family, but otherwise the risk is relatively minor and by the time you reach cousins the issue is basically at the same level as a stranger.