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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).
More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.