7 Things You Never Knew About Your Belly Button

When was the last time you gazed at your navel? The belly button deserves a lot of attention because of all the secrets it’s concealing.

Your belly button marks where the umbilical cord used to be

The belly button marks the place where the umbilical cord was attached, says Christopher S. Baird, PhD, assistant professor of physics at West Texas A&M University in ravine, TX.

When a baby is within the uterus, the umbilical cord attaches to the navel at one end and your placenta—an organ that develops throughout maternity that’s attached to the uterus—at the other end. The cord transports nutrients from the mother to the baby.

Once a baby is born, the umbilical cord becomes useless. The body responds to the transition by closing up the point where the cord is connected to the body. The result: A belly button.

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