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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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Cyanide works by making the human body unable to use oxygen.
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According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.
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The horizontal fraction bar was introduced by the Arabs.
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If you could remove all of your skin, it would weigh up to 5 pounds.