Though we may inhabit our bodies every day, clothing them, washing them, and feeding them as though it were second nature, the mechanics that make us, well, us, are pretty darn disgusting. Just ask the doctors, nurses, and medical enthusiasts who learned all the gross things about the human form so we didn't have to. 

From the tiny parasites that have set up shop on our faces to the icky truth about what's going on in your digestive tract as you read this, here are the 24 weirdest facts about our bodies, as told by doctors and nurses.