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Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).

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People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.

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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.

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There are 20 feet of blood vessels in each square inch of human skin.

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In 1844, Charles Goodyear obtained the first patent for a rubber condom.

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