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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

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Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.

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In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

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According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

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In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

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