>>507992703Inbreeding doesn't really cause problems it's deleterious mutations / mutational load that causes the problems and that is increased by drug use, having children at older age, stress, radiation, poisons, etc. and the inbreeding is just what enables more of the garbage they are carrying in their genes to become expressed. Inbreeding is actually necessary to some extent to purge mutational load. I'm playing dota 2 right now so someone else will have to explain fully from here on.