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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.

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

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The longest a person has survived after a heart transplant is 24 years.

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Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

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In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

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