Innies, outies and omphalophobia: 7 navel-gazing questions about belly buttons answered
- Written by Sarah Leupen, Senior Lecturer in Biological Sciences, University of Maryland, Baltimore County
Your genes determine the look of your navel.Mike Kemp/Tetra images via Getty ImagesEveryone has one, but you might not know much about it. Here biologist Sarah Leupen, who teaches human and comparative animal physiology, explains the ins and outs of belly buttons.
1. Why do I even have a belly button?
Your belly button, or navel – clinically,...




