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The human body produces and destroys 15 million blood cells every second.
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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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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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Blood is approximately twice as thick as water because of the cells and other components found in it.
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The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.