The belly button, it turns out, is one of the least-studied parts of the human body. But one of its great mysteries may now have been solved – why most people have an innie, or concave belly button.

Medically reviewed by Michael Menna, DO A complication with belly button piercings is rejection, or when your body tries to ...

Curious about what can make or break a tummy tuck? Discover why the humble belly button is crucial for flawless post-surgery ...

"Over time, the piercing occasionally got snagged on washcloths and lace tops and would briefly bleed and swell," says Jasmine, admitting that nothing else really concerned her about living with her ...