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A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

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The average adult has about 21 square feet of skin.

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The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

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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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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

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