food allergy high potassium

Food allergy itself does not directly increase blood potassium. Excessive blood potassium in the clinical allergy period is mostly a transient problem caused by three indirect triggers: cellular stress caused by allergies, medication superposition, and dietary misjudgment. Most people without underlying kidney disease can return to normal as their allergies are relieved. Emergency intervention is only required when blood potassium exceeds 6.0mmol/L. There is no need to panic, but the potential risks to the heart cannot be ignored.

Many people may not believe it, but I just met a typical example last month: a 28-year-old man suffered from a mango allergy for three days, and half of his face was swollen to the point that he could not open his face. He ate bananas and oranges at home for three days to supplement vitamin C. He did not have any underlying kidney disease. When he came for a follow-up examination, his blood potassium shot up to 5.7mmol/L, which was 0.2 higher than the upper limit of normal. He was still confused and said that he rarely even eats bananas, so why is his potassium high?

The academic community has actually been arguing about the relationship between the two for a long time. Old-school physicians generally believe that allergies and high potassium are not mutually exclusive. Only patients with renal insufficiency and potassium excretion disorders will experience fluctuations in blood potassium during the allergic period. However, in recent years, clinical research in allergy departments has shown that Statistics show that about 12% of patients with moderate to severe acute allergies, even if they do not have underlying renal diseases, will experience a transient increase in blood potassium. Most of the values are between 5.5-5.9mmol/L, and they can basically fall back on their own 24-48 hours after the allergy is controlled.

It is actually not difficult to explain this phenomenon. You can imagine the potassium ions in the cell as a little person locked in a room. Under normal circumstances, the cell membrane is a solid wall, and only a very small amount of potassium will escape into the blood vessels. When a severe allergic attack occurs, a storm of inflammatory factors breaks out throughout the body, which is equivalent to someone constantly throwing stones at a wall. The permeability of the cell membrane directly increases, and a large amount of potassium ions escape from the cells and enter the blood. Blood tests will naturally show high potassium. The year before last, I had taken in a child with a peanut allergy. When he came in, he was panting so much that his lips were purple, and his blood potassium suddenly shot up to 6.1mmol/L. We didn’t give him any potassium-removing medicine, so we controlled the allergy first and inhaled oxygen. Then we rechecked him four hours later. The blood potassium dropped directly to 4.8mmol/L. That’s why.

In addition to the body's own stress response, the most easily overlooked pitfall is actually the use of medication. Many patients with underlying diseases usually take antihypertensive and diuretic drugs with potassium-sparing effects such as valsartan and spironolactone. When allergies occur, they either take ibuprofen or acetaminophen to relieve pain and itching, or the doctor does not pay attention to the previous medication and prescribes antibiotics that affect potassium metabolism. When several types of drugs are superimposed, the kidney's potassium excretion pathway is temporarily inhibited. Even if a high-potassium food is not eaten, blood potassium will quietly rise. Last month, a 62-year-old aunt with high blood pressure was like this. She had joint pain after allergies and took ibuprofen for three days. Her blood potassium rose to 5.8. She stopped the ibuprofen and returned to normal within two days. She always thought it was because she ate two bites of spinach the day before.

There is another trigger that no one can think of at all, which is the misunderstanding of nutritional supplements during allergies. Too many people who are allergic think that they should eat more fruits and vegetables to supplement vitamin C to enhance their resistance. Kiwis, oranges, and avocados are all high-potassium foods with high potassium content. Some people find it troublesome to eat fruits, so they drink fruit and vegetable juices directly. One cup can equal the potassium of three or four fruits. In addition, during the allergy period, there is no appetite, less eating, and even vomiting and diarrhea, leading to metabolic disorders. If potassium cannot be excreted, isn't it high? The most outrageous girl I have ever seen had a pineapple allergy and a swollen mouth. I heard others say that drinking fresh coconut water can reduce edema. She drank four freshly opened coconuts in one day, and her hands and feet were numb when she came. When her blood potassium was checked, it was 6.2. You must know that the potassium content of coconut water is twice as high as that of bananas. It is completely high potassium supplemented by yourself.

In clinical practice, there is still controversy over whether to routinely check blood potassium during the allergic period. Many doctors think it is not necessary. After all, most people have a transient increase in potassium and will not have symptoms. However, our department last year counted more than 300 patients with acute allergies, and 17 people without underlying kidney disease developed high potassium. Among them, 3 of those with a score above 6.0 showed symptoms of panic, so our current advice is very practical: as long as the allergic range exceeds 1/3 of the whole body, has symptoms of chest tightness and asthma, or is taking potassium-sparing drugs, it is always a good idea to spend more than ten yuan to check the blood potassium and buy it with peace of mind.

Don’t panic if it’s found that your potassium is high. If it’s just over 5.5 and you don’t have numbness in your hands or feet or palpitation, stop high-potassium foods first and drink more warm water to promote urination. After the allergy is gone, you can check again and everything will be normal. Don’t take potassium-removing medicines blindly. If your blood potassium reaches 5.8 or above, or you already feel numb or palpitated, you can just ask a doctor to evaluate whether you need intervention. It is not a big deal. My general advice to allergy patients is very simple: Don’t engage in any “nutrition supplements” during allergies. It’s safest to drink warm prescriptions. If you take medicine for a long time, tell your doctor in advance to adjust it, and you will most likely avoid the pitfalls of high potassium.