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Vaccines prevent between 2.5 and 4 million deaths every year.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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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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There are more nerve cells in one human brain than there are stars in the Milky Way.
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The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.