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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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Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.
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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
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If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.