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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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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

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If all the neurons in the human body were lined up, they would stretch more than 600 miles.

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The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.

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Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

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