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Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.
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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.
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The horizontal fraction bar was introduced by the Arabs.