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There are more nerve cells in one human brain than there are stars in the Milky Way.
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There are approximately 3 million unintended pregnancies in the United States each year.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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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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More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.