Dr. Jed Warns: 5 Vegetables People with Kidney Disease Should Avoid! Eating the Wrong Ones Burdens the Kidneys and Can Cause Heart Arrhythmias and High Blood Pressure
A kidney specialist warns that people with kidney disease should limit five vegetables—bitter greens, piper leaves, mushrooms, broccoli, and pickled vegetables—due to high potassium or sodium content that can trigger heart problems and high
Dr. Jed Warns: 5 Vegetables People with Kidney Disease Should Avoid! Eating the Wrong Ones Burdens the Kidneys and Can Cause Heart Arrhythmias and High Blood Pressure
Dr. Jetsadej Bunyanvongvirocha, Deputy Director of Primary Care at Maha Sarakham Hospital, shares medical guidance on Facebook about vegetables to avoid due to their harmful effects on kidney health.
5 Vegetables People with Kidney Disease Should Avoid!
"Many people, once they learn their kidneys are declining, immediately try to eat more vegetables thinking it's definitely good for them. But for kidney patients, I need to tell you first: 'Some vegetables, if eaten incorrectly, can become a burden on your kidneys.' Especially concerning are potassium and sodium, which your kidneys can no longer eliminate as effectively. If these accumulate excessively, they can affect your heart and blood pressure. So it's not about avoiding vegetables entirely, but about 'knowing what to watch out for' and eating the right amount."
Bitter Greens / Amaranth Greens This vegetable group contains fairly high potassium, approximately 550-700 mg per 100 grams. If consumed in large quantities, especially when blanched or boiled, while these cooking methods reduce some potassium, the levels still remain high. People with stage 3 kidney disease and above should limit intake to no more than half a cup per meal and eat infrequently, as there's a risk of potassium accumulation that can cause undetected heart arrhythmias.
Piper Leaf / Young Peppery Leaf A homegrown vegetable many people enjoy, but it contains high potassium, approximately 400-600 mg per 100 grams. It's typically eaten in multiple servings, leading to hidden accumulation. Especially for those with kidney function below 60, caution is strongly advised. It's recommended to significantly reduce the amount or avoid it entirely if potassium levels are already elevated, as there's a risk of complications.
All Types of Mushrooms (Especially Oyster and Shiitake Mushrooms) Mushrooms contain fairly high potassium, approximately 300-500 mg per 100 grams, and are typically consumed in large quantities in soups, stir-fries, or hot pots. People with mid to late-stage kidney disease should limit consumption to no more than one small teaspoon per meal and avoid eating them multiple times in a single day, as potassium accumulation can occur unknowingly.
Broccoli / Cauliflower This vegetable group contains moderate potassium, approximately 250-350 mg per 100 grams. For the general population, this is considered excellent, but for those with kidney disease, portions must be controlled. It's recommended to eat no more than one small cup per meal and avoid consuming multiple servings in a single day, especially for those with elevated potassium levels. These should be alternated with other vegetable types.
Pickled / Processed Vegetables The concern here is 'sodium,' which is very high, approximately 700-1,200 mg per 100 grams, from the pickling process. This puts greater strain on kidney function to eliminate waste and increases blood pressure. This is especially dangerous for those with kidney disease. It's recommended to avoid these foods, or if you must eat them, rinse them first and consume only the minimum necessary amount.
Dr. Jed also recommends: How to eat vegetables safely?
- Choose low-potassium vegetables such as cucumber, zucchini, or light green Chinese cabbage (approximately <150 mg/100 grams) - Cut into small pieces, soak in water for 2-4 hours, and blanch before discarding the water to reduce potassium - Don't repeatedly eat the same vegetable or consume large quantities in a single meal - Avoid pickled and processed foods to reduce sodium accumulation in the body - If you have stage 4-5 kidney disease, consult a doctor or nutritionist to control portions appropriately
"People with kidney disease can still eat vegetables," Dr. Jed says. "But you need to understand that your kidneys' ability to eliminate potassium and sodium has declined. If you eat the wrong type or too much, mineral levels in your blood can become dangerously high, especially causing heart arrhythmias. So choose wisely, control your portions carefully, and you'll truly help preserve your kidneys and reduce your body's burden in the long term."
