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The average adult has about 21 square feet of skin.
Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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