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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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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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The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.