January Jones credits eating her own placenta, along with a healthy diet and vitamins, to helping her get back to work on the hit series, “Mad Men,” in a matter of weeks. She told People.com, “Your placenta gets dehydrated and made into vitamins. It’s something I was very hesitant about, but we’re the only mammals who don’t ingest our own placentas.” “It’s not witch-crafty or anything,” said Jones, who plays Betty on the TV show. “I suggest it to all moms.” In some cultures, it is commonplace to consume the afterbirth. While placenta encapsulation is not FDA-approved in the U.S.,...