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Did you know?
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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Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
Did you know?
The longest a person has survived after a heart transplant is 24 years.


