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What does skin do for the body?

Some of the things skin does for the body include the following:

  • Skin acts as a waterproof barrier.
  • Skin stops germs from getting into the body.
  • Skin makes sure body temperature stays just right.

Sometimes it seems like the main purpose of skin is to sell magazines and movie tickets, but its real job is to protect your most valuable assets from the outside world: your heart, brain, bones, blood, nerves, muscles, the works. It also wraps them up in a nice-looking package so you're not a blobby organism.

In addition, skin is your first line of defense against infection. It fends off millions of germs, chemicals and other contaminants that are out to invade you. It helps regulate your body temperature and, of course, lets you touch and be touched, so you sense pain, feel pleasure, and express love.

Skin does one more genius thing: When the sun shines on it, your skin makes vitamin D3, the ultimate antiaging vitamin. It's essential for keeping your heart, bones, memory and blood pressure humming along.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.