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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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Cyanide works by making the human body unable to use oxygen.
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According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.
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All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.