Scientists have discovered a hidden fibrous sheath beneath the belly button that explains why navels stay concave for life.

An umbilical cord granuloma looks like a small, round bump in the middle of the navel after the cord stump has fallen off, according to the American Academy of Pediatrics (AAP). The tissue is often ...

Earwax, boogers, toenail fungus — the body can be pretty gross sometimes. Don’t forget to add “belly-button gunk” to that list. And when you see something in there, you probably want to get it out.