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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.