What factor make a bellybutton innie vs outie?
Is it the OB cutting the cord one way or another?
Is it hereditary?
In: 1
It’s mostly random. Basically, the belly button is a scar covering the hole where the umbilical chord used to be, and mostly it heels as an innie, but sometimes it heels with a bit more of a lump.
https://www.healthline.com/health/what-causes-an-innie-or-outie-belly-button#outie-vs-innie
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