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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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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.

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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

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Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

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

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