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The human body produces and destroys 15 million blood cells every second.
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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 longest a person has survived after a heart transplant is 24 years.
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Your heart beats over 36 million times a year.
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Limit intake of red meat and dairy products made with whole milk. Choose skim milk, low-fat or fat-free dairy products. Limit fried food. Use healthy oils when cooking.