In 1671, the chief butler to the prince de Conde, Francois Vatel, was charged with overseeing a feast in honor of the visiting Louis XIV. Forgoing 12 days of sleep for the feast preparation, when Vatel discovered he lacked two roasts he said, “I have lost my honor. . . This is a disgrace which is more than I can bear (105).” The lack of sleep and missing roasts proved too much for Vatel when he stabbed himself with his own sword when his fish did not come in time to prepare for the feast. On the road to the church, his corpse passed the cart delivering the fish.
In the 1600s, “[r]edheads were thought to be the product of sex during menstruation and were believed to exhibit the lack of sexual self-discipline inherent in the ill-timed copulation of their parents (109).”
The the Middle ages, after monks were forbidden to practice medicine and dentistry any more, barbers began to assume medical roles. A common practice of the time was bloodletting. Barbers advertised their bloodletting services by displaying "buckets of fresh blood in their windows. When the blood congealed, it was poured into the street, where it spoiled." (34)
Sources for first two: "Sex With Kings" by Eleanor Herman." Sources for third: "Toothworms spider juice and illustrated history of dentistry."