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Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

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Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

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There are 20 feet of blood vessels in each square inch of human skin.

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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

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No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.

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