I can assure you it's a very, very rare thing you will find women doing. Moreso they will plant it at home but you even have to be careful how you do that, as it is so rich in nutrients that it can actually kill the plant.

Animals eat the placentas of their babies so it's not really a weird thing to do when you look at it that way, but not something I would do. I can't eat anything rich like liver or kidneys....