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Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.