A complication with belly button piercings is rejection, or when your body tries to remove the piercing from your skin. This is an immune response—your body sees the piercing as a foreign object and ...

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From slugging to mouth-taping, there’s no shortage of social media trends claiming to fix, well, just about anything. The latest one involves putting castor oil in your belly button, also known as ...

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.