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Your heart beats over 36 million times a year.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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People about to have surgery must tell their health care providers about all supplements they take.
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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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Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.