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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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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.
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The FDA recognizes 118 routes of administration.
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In 1864, the first barbiturate (barbituric acid) was synthesized.