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Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.
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The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.
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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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In 1864, the first barbiturate (barbituric acid) was synthesized.