A medication that increases urine production by the kidneys, helping to remove excess fluid and sodium from the body. Commonly used to treat high blood pressure, heart failure, and edema.
From Greek 'diouretikos' meaning promoting urination, from 'dia' (through) and 'ouron' (urine). The medical understanding evolved from ancient observations that certain substances increase urination to modern knowledge of kidney physiology.
Diuretics are nicknamed 'water pills,' but they're actually salt pills in reverse - they work by blocking sodium reabsorption in the kidneys, and water follows salt out of the body! This is why people on diuretics are often told to watch their potassium levels, since these medications can wash out this essential mineral too.
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