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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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The horizontal fraction bar was introduced by the Arabs.
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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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Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).
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The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.