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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
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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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Your heart beats over 36 million times a year.
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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.