Low potassium levels can occur when some medications are taken and water pills can also deplete potassium in the body. Low levels also occur if someone uses laxatives in excess.
Potassium is a naturally occurring element in the body. When a person has low potassium, it means it has been lost by some means. Some people lose it by chronic diarrhea, laxative abuse, or diuretic use.
Other people may have low potassium because of systemic disease like renal failure. You can find more information here: emedicinehealth.com/low_potassium/page2_... Potassium Causes.
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