Mmmmmm. Cannibalism for the win. I wonder how many recipes you can find on a search engine (google is evil) for human placenta.
At the same time, I know that cow placenta is considered a delicacy in many cultures. In Israel there are a lot of Thai workers who come over for 6 month stints doing agricultural work etc, and they often visit the dairy farms at night and fight with the jackals over who gets the placenta after a birth. No kidding, I've seen it (as a retired dairy farmer).