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Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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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.
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The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
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The longest a person has survived after a heart transplant is 24 years.