Here’s a link to an article, the likes of which we should definitely have more.
I really wish I saw more articles where people consulted with experts about the depiction of whatever is in the media. That’s the second best option, behind media putting a larger effort into being more realistic. Don’t think realism in media is important? Check out Television is Trying To Kill Us on TV Tropes, my reference page for this kind of thing.
Just a few weeks ago, when three characters got shot on a TV show (two in the head, one in the stomach), people were actually arguing in the comments on Hulu that it was suspicious one had “only” been shot in the stomach, and that the shooter clearly intended for the person to survive the injury. I swear, if this turns out to be true, I will lose a lot of brain cells by the time I finish banging my head against a wall.
Back to the article, I really loved the doctor’s response when asked if Joffrey’s personality can be explained by inbreeding. She managed the perfect response, even in written format. Though I have no idea if MTV was going for the funny, or didn’t actually know what the risks of inbreeding are.
Put simply: if two people who have a child are related, there’s a higher chance they both have a “bad version” of the same gene. And therefore there’s a higher chance that the kid gets two “bad versions” of the same gene, and no “good version”. (Each parent would have one “good version” and one “bad version”, in this case.)
MTV definitely tried to push the article in a more sensationalist direction, but that’s no surprise. Although, one of their conclusions was that Jaime was “riddled with STDs” from Cersei, and really, the STDs would have been Robert Baratheon’s fault.