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The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

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

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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

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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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