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In 1864, the first barbiturate (barbituric acid) was synthesized.
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You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.
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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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HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.