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.

Your belly button might seem like nothing more than a remnant from your time in the womb, but this small area can actually provide valuable clues about your digestive health and overall wellbeing.

Does rubbing castor oil in your belly button have any health benefits? Experts explain how "naval pulling" with castor oil ...