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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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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
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Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.