A member asked:

What are reasons for my potassium to stay very low over past couple years? just had it tested again and is 2.6 . i have breast and thyroid cancer

A doctor has provided 1 answer

Needs evaluation: The most common cause for a low potassium is being on a diuretic (water pill). If you have a potassium of 2.7 and have not been on a diuretic, you need an evaluation, as this is highly abnormal. Problems with overproduction of adrenal hormones can cause this. There are some rare kidney problems that can do this. Also, chronic diarrhea.

Answered 9/16/2014

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