The oldest known tattoos belong to Ötzi, a 5,300-year-old mummified corpse who suffered from heart and Lyme disease, colonic whipworms, gallbladder stones, missing ribs, and arthritic joints. His sixty-one tattoos are patches of small charcoal incisions; their proximity to acupuncture points has led researchers to believe they were created for curative purposes. 

A Babylonian medical handbook dating to 1700 BC offers a renal diagnostic that reads, “If his urine is like ass urine, that man suffers from ‘discharge.’” Other alarming symptoms of discharge: if his urine is “like beer dregs,” “like wine dregs,” or “like clear paint.”

In 2014 surgeons in the U.S. performed at least 26,175 gynecomastia corrections—breast reductions—on male patients.

Swordfish, perhaps the world’s fastest swimmers, secrete performance-enhancing grease from the base of their swords that helps them swim at an estimated sixty-two miles per hour. “This isn’t ordinary fish slime,” said a researcher in 2016. 

Menstrual taboos persisted in nineteenth-century Europe. In the Rhine it was said that women on their periods turned fermenting wine to vinegar, in France that they were unable to whip up a successful batch of mayonnaise, in Britain that “women should not rub the legs of pork with the brine-pickle at the time they are menstruating, or the hams will go bad.”

A fourteenth-century Egyptian encyclopedia includes a recipe to “tighten the vagina.” One should grind “the scorched skin of a jackal, the scorched hooves of a goat, the scorched hoof of a donkey, scorched thorn apple, a scorched sea crab, scorched polypody, and Persian thyme,” then administer as a suppository. “The woman,” promises the compiler, “becomes like a virgin.”

Athenaeus wrote that fourth-century-BC Greek courtesan Phryne was so beautiful “she used to wear a tunic covering her whole person” because it was “not easy to see her naked.” Once prosecuted for a capital crime, she was about to be declared guilty when the orator pleading her case brought her to the middle of the court and ripped off her tunic. The judges, “so moved by pity,” acquitted her of all charges. 

A common belief in antiquity was that bees were born of decaying ox flesh. Virgil instructs in his Georgics to stop up a young bullock’s nostrils and mouth, beat it “to a pulp through the unbroken hide,” shut the carcass in a small room to ferment, and await the bees that will burst out “like a shower pouring from summer clouds.”

Lucian claims in his True History to have traveled to the moon. There, he writes, he encountered a tribe of Treemen whose reproductive method was to cut off and plant a man’s right testicle, let it grow into “an enormous tree of flesh, like a phallus,” then harvest and carve men from its large acorns. Wealthy Treemen were given genitals of ivory; the poor got wood.

A UK fashion student announced plans to harvest the DNA of late couturier Alexander McQueen—extracted from hair used in his 1992 collection “Jack the Ripper Stalks His Victims”—to develop epidermal material for a line of leather jackets and bags. The lab-grown skin will feature McQueen’s freckles, moles, and tattoos, and be susceptible to sunburn. 

Before Michelangelo’s David was placed in Florence’s Piazza della Signoria in 1504, Leonardo argued the nude sculpture needed “a decent ornament” and sketched it with underpants inked on. David was later fitted with a prim brass girdle sustaining twenty-eight copper leaves. It remained for at least forty years. 

Andean legends tell of pishtacos, bogeymen who steal their victims’ fat. In colonial times they were said to be Franciscan monks who used the fat as church-bell grease or holy oil. By the 1960s they were sometimes represented as workers who used it to lubricate modern factory machinery or airplane engines. 

Scholars in the 1970s compiling the first comprehensive Sumerian dictionary struggled to interpret a phrase that translated into English as “He put a hot fish in her navel.”

Jin dynasty general Yuanzi once peeked in on a soothsaying Buddhist nun while she bathed. He watched her carve open her belly, take out her viscera, and cut off her own head. Later, the nun emerged intact. “If you remove or bully the supreme ruler,” she told Yuanzi, “your body should be like that.” The general was disappointed; he had been planning a coup but now reconsidered. 

“He whose meat in this world do I eat,” reads the Hindu Laws of Manu, “will in the other world me eat.” Another verse simply warns not to “behave like the flesh-eating ghouls.”