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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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The average office desk has 400 times more bacteria on it than a toilet.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.