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Your heart beats over 36 million times a year.
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The average adult has about 21 square feet of skin.
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In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.