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Did you know?
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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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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The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.
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Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.