Peters, Michael
June 2004
BMA A-Z Family Medical Encyclopedia;2004, p621
Reference Entry
A definition of the term "potassium" is presented. In medicine, potassium refers to a metallic mineral needed to help maintain normal heart rhythm, regulate the water balance within the body, conduct nerve impulses and contract muscles. Potassium can be extracted from various food sources such as lean meat, whole grain and various fruits. Hypokalemia or potassium deficiency can cause fatigue, drowsiness, dizziness and muscle weakness.


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