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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
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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, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.