How Old Is Your Body?

What's your body's real age? If you're 25 years old, you might be thinking: "Duh, my body is 25." Well, some parts of your body are as old as you are, like the lenses of your eyes. Other body parts, however, are brand spanking new. Your skeleton, for example, replaces itself every 10 years. To learn more about your amazing body, watch the following videos.

Your Body's Real Age

Don't worry—you won't have a complete change of heart. Discover the real age of your body parts.

03:09

from Skunk Bear: Science From NPR

Why Your Body Is Amazing

Did you know that most eyes can distinguish between 2.3-7.5 million colors? Learn more about your natural superpowers with ASAPScience.

03:09

Key Facts In This Video

  • 1

    The cells in the inner lens of your eye and your heart muscles have been with you for your entire life. (0:26)

  • 2

    Your fingers can detect a ridge that's 7,500 times smaller than the diameter of a human hair. (1:12)

  • 3

    Some people have more bacteria in their mouth than there are humans in the world. (2:05)

How Exactly Does Your Body Process Food?

You just ate EVERYTHING in your fridge. Now what? DNews satiates your hunger for digestion facts below.

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Aging

Anatomy

Human Biology

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