The Heel Hosts the Most Variety of Fungus of Any Body Part

Not every bodily superlative is a happy one. In 2013, scientists analyzed the human body to discern what nook or crevice played host to the greatest variety of microscopic fungi. After conducting close inspections of palms, feet, toenails, groins, nostrils, and more, the researchers determined that the human heel is the body part most ripe with fungi. The heel of the foot contains 80 different types of fungi, and that number only increases when you include the rest of the foot, as toenails were found to provide refuge for 60 types of fungi (the space between toes adds another 40). While not all fungi are necessarily harmful, about half of them can be, and these numbers may help explain why feet are prone to fungal infection such as athlete’s foot.