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There are 20 feet of blood vessels in each square inch of human skin.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.
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In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.