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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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The average office desk has 400 times more bacteria on it than a toilet.
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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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Thyroid conditions may make getting pregnant impossible.
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Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).