Vaccines prevent between 2.5 and 4 million deaths every year.
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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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Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).
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In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).
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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
Anatomy of the Brain
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Hominid Brain Size
Brain myths
Probiotics are live microorganisms, usually bacteria, mainly found in cultured dairy foods
A company that makes cell phones has the following cost structure. They have fixed costs of ...