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Your heart beats over 36 million times a year.
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In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.
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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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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.