Teeth are the only part of the human body that cannot repair themselves.

Humans have survived situations once thought impossible.

Fact #3083 · Human Body

The liver can regenerate itself — as little as 25% of the liver can regrow into a full organ.

Fact #3276 · Human Body

The human circulatory system is more than 60,000 miles long.

Fact #2608 · Human Body

Your brain can store the equivalent of millions of gigabytes of information.

Fact #1991 · Human Body

The cornea of the eye has no blood vessels — it gets oxygen directly from the air.

Fact #3497 · Human Body

Your brain uses 20% of your energy.

Fact #1709 · Human Body

Your brain interprets signals.

Fact #2379 · Human Body

An individual blood cell takes about 60 seconds to complete a full circuit of the body.

Fact #2616 · Human Body