Why would a navel piercing gradually tear through?

This Is Called, Growing Out Or Rejecting. This Can Happen To Any Person That Gets A Navel Piercing. It Can Affect Younger People Because As You Grow, The Piercing Can Gradually Be Pushed To The Suface Of Skin, And You Will Have To Take It Out. But If This Does Happen You Can Get It Repierced, You Just have To Let It Heal First. x