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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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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.
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There are more nerve cells in one human brain than there are stars in the Milky Way.