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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.
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Medication errors are three times higher among children and infants than with adults.
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In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.
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The familiar sounds of your heart are made by the heart's valves as they open and close.