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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.
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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.
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The human body produces and destroys 15 million blood cells every second.
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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.