Well well well. You learn daily.
In all of our research, we came across this practice. It's the ancient tradition in Chinese culture to eat your placenta. You read that right. It's becoming a very popular practice here. It is billed to have many positive benefits for the health of the mom. Usually it is cooked, cut up, dehydrated, and powdered into capsules. It's benefits include increased energy and increased milk production.
Humans are the only mammals known to not eat their placenta. The jury is out whether its eaten as a form to curb prey from knowing offspring is available or if its an instinctual habit to take in needed nutrients after birth.
Pretty amazing stuff.