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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
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Thyroid conditions may make getting pregnant impossible.
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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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The human body produces and destroys 15 million blood cells every second.