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Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.
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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.