Your Body, By The Numbers: Skin

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Harvard Medical School
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Your Body, By The Numbers: Skin

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Your Body, By The Numbers
Your Body, By The Numbers: Skin
Your Body, By The Numbers: Skin
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You may never need to know how much your skin weighs, but if you do, here's where you'll find it, along with other amazing facts.
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InteliHealth
2011-09-06
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InteliHealth Medical Content
2013-06-05

Reviewed by the Faculty of Harvard Medical School

Your Body: By The Numbers

Skin
The average man has about 16 square feet of skin that weighs between nine and 15 pounds.

Each square inch of skin contains several hundred sweat glands, blood vessels, nerve endings and oil glands. The sweat glands number more than 2 million overall.

Skin is thickest — about 1/5 inch — on the soles of the feet and the palms of the hands. It is thinnest on the scalp.

Fingernails grow about one millimeter (0.04 inch) every 10 to 15 days. It takes them about six months to grow from the nail bed to the tip of the finger. Nails grow faster on your favored hand and on your longer fingers.

Millions of dead skin cells are replaced each day with new ones. A cell's life lasts about 10 to 30 hours total.

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Last updated June 23, 2014


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