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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.
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In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.
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Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.