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If you could remove all of your skin, it would weigh up to 5 pounds.
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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
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Vaccines prevent between 2.5 and 4 million deaths every year.
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Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.
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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.