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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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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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On average, the stomach produces 2 L of hydrochloric acid per day.
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Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).
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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.