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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 average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.
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In 1864, the first barbiturate (barbituric acid) was synthesized.