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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
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The human body produces and destroys 15 million blood cells every second.
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The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).
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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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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.