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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.
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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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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
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Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.