Potassium is an essential mineral. When potassium levels fall too low doctors call it HYPOkalemia. This condition can become life threatening. Symptoms include weakness, confusion, muscle cramps, muscle spasms, numbness, tingling, irregular heart rhythms, constipation, thirst and/or frequent urination. Too much potassium (HYPERkalemia) can also lead to irregular heart rhythms (palpitations), tingling or numbness in lips, feet, or hands, weakness, slow pulse and confusion. Is it possible for individuals to overdose on potassium-rich foods? This reader thinks so.
Too Much of a Good Thing?
Q. I follow a potassium-rich diet to manage my blood pressure. However, a recent blood test showed a high level of potassium. My doctor said this could be a health hazard.
By cutting back on fruits and limiting the amounts of nuts and beets I eat, I got back to a normal level. It goes to show you that too much of a good thing can be harmful.
A. The body generally keeps potassium within a fairly narrow range. You are smart to pay attention to how your diet affects your blood level of this crucial mineral, since too much and too little potassium are both dangerous.
We hope your physician can figure out why your potassium levels got out of the safety zone. Quite a few medications can disrupt levels of potassium. Salt substitutes can also cause problems for some people:
Can You Overdose on Potassium-Rich Foods Such as Bananas?
A few years ago we received a question from a mother concerned about her daughter’s love of bananas. She ate several every day. Here is a link to that question:
To put your mind at ease, most people cannot overdose on potassium-rich foods. That said, there is a case of a young woman who suffered from anorexia nervosa (Brain & Development, July, 2007). She primarily ate 20 bananas daily for roughly two years. She did indeed develop hyperkalemia. The authors go on to note:
“When the patient resumed other food ingestion after 26 months of obsessive and restricted eating of banana, the abnormalities in her blood data and her psychological state were all corrected toward normal. We conclude that in this case, the obsessive and restricted habit of banana ingestion resulted in hyperkalemia, hyperdopaminemia, and psychological change.”
The People’s Pharmacy Perspective:
We have always been strong proponents of the saying, “moderation in all things.” That is true of foods as well as medications. You may wish to learn about drug interactions that can lead to hyperkalemia and why this is such a potentially dangerous situation.
One reader reacted to this post:
“Thank you for continuing to write about the deadly interaction between the antibiotic SMZ-TMP and certain blood pressure pills. Because of this article you may have saved my husband’s life!
“If only doctors and pharmacists would read your articles. You wrote about such a reaction many years ago, and, at that time, I alerted my elderly friends to be aware. Little did I know that my 79-year-old husband would fall victim to such a prescription interaction last year when our elderly internist prescribed a high dose of SMZ-TMP for 14 days in treatment of pneumonia. We have known that this doctor does not keep up with updates in many areas of medicine.
“Remembering the possibility of this deadly interaction from your articles, I immediately alerted his cardiologist who ran blood tests which determined he was suffering from dehydration and moderate loss of kidney function . He was also was taking losartan. When our internist saw the blood test results, he said, “These results must be wrong.” His cardiologist said to discontinue the drug to avoid hyperkalemia.
“I don’t know how many times I share your many articles with our cardiologist who actually reads them, which makes for a good team relationship. Keep up the good work in making us good health advocates for our own protection!”
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