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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

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According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.

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

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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

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