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Did you know?
The average adult has about 21 square feet of skin.
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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
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If you could remove all of your skin, it would weigh up to 5 pounds.
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In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.
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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.