Potassium
High potassium: no symptoms, but it can affect your heartbeat
High potassium usually has no symptoms — by the time you feel it, it is often very high. 5 things every kidney patient should know.
- 1Potassium leaves the body through the kidneys. As kidney function falls it builds up; very high levels disturb heart rhythm, can be fatal, and often cause no symptoms.
- 2Common high-potassium sources: banana, kiwi, orange juice, potato, tomato, dried fruit, nuts, chocolate, concentrated juices.
- 3"Salt substitutes" and "low-sodium" soy sauce usually replace sodium with potassium chloride — a hidden high-potassium source for kidney patients.
- 4Cutting vegetables and root crops small, soaking and boiling in plenty of water, then discarding the water removes part of the potassium; soups, stews and hot-pot broth keep it in the liquid.
- 5There is no one-size-fits-all potassium limit — guidelines say adjust to your blood level. Some kidney-protective medicines raise potassium; do not stop them yourself, ask your doctor to adjust.
If "K" is high on your report, ask your doctor first: is it diet, medication or constipation? Don't guess, and don't stop medicines on your own.
Caption (ready to paste)
High potassium usually has no symptoms — by the time you feel it, it is often very high. 5 things every kidney patient should know. 1. Potassium leaves the body through the kidneys. As kidney function falls it builds up; very high levels disturb heart rhythm, can be fatal, and often cause no symptoms. 2. Common high-potassium sources: banana, kiwi, orange juice, potato, tomato, dried fruit, nuts, chocolate, concentrated juices. 3. "Salt substitutes" and "low-sodium" soy sauce usually replace sodium with potassium chloride — a hidden high-potassium source for kidney patients. 4. Cutting vegetables and root crops small, soaking and boiling in plenty of water, then discarding the water removes part of the potassium; soups, stews and hot-pot broth keep it in the liquid. 5. There is no one-size-fits-all potassium limit — guidelines say adjust to your blood level. Some kidney-protective medicines raise potassium; do not stop them yourself, ask your doctor to adjust. If "K" is high on your report, ask your doctor first: is it diet, medication or constipation? Don't guess, and don't stop medicines on your own. Sources: KDIGO 2024 CKD Guideline — Kidney Int 2024;105(4S):S117–S314; KDOQI Nutrition in CKD: 2020 Update — AJKD 2020;76(3S1):S1–S107; NKF — Potassium and Your CKD Diet Verified: 2026-10-16 Cards and scripts are general health education compiled from public clinical guidelines. They are not individual medical advice and do not replace assessment by your doctor, pharmacist or dietitian. Please keep the sources and this notice when sharing; this page holds the latest version. https://beyondckd.com/en/cards/high-potassium
60-second short-video script
Shot list and voice-over. Vertical 9:16; put captions in the lower third. Every line maps to the sources on the left.
| sec | Screen | Voice-over |
|---|---|---|
| 0–5 | Lab report: K 5.8 in red | This K on your report is high — and you may feel nothing at all. |
| 5–15 | ECG waveform peaking | Potassium leaves through the kidneys. When they weaken it builds up, and too much disturbs heart rhythm — fatal in severe cases, and usually silent. |
| 15–26 | Line-up of high-potassium foods | Common sources: banana, kiwi, orange juice, potato, tomato, dried fruit, nuts, chocolate. |
| 26–35 | Zoom on label: potassium chloride | One many people miss: salt substitutes and low-sodium soy sauce swap sodium for potassium chloride — high potassium for kidney patients. |
| 35–46 | Chop → soak → boil → pour water away | Chop vegetables small, soak, boil in plenty of water and discard it — that removes part of the potassium. Soups and hot-pot broth do the opposite: they keep it. |
| 46–54 | Pill bag + "do not stop on your own" | There is no single potassium limit — it depends on your blood test. Some kidney-protective drugs raise potassium; don't stop them yourself, let your doctor adjust. |
| 54–60 | Site logo + URL + QR | Want the potassium in any food? Beyond CKD has a 346-food lookup table and a diet calculator. |
Sources (every point on the card maps to one)
- KDIGO 2024 CKD Guideline — Kidney Int 2024;105(4S):S117–S314
- KDOQI Nutrition in CKD: 2020 Update — AJKD 2020;76(3S1):S1–S107
- NKF — Potassium and Your CKD Diet
Verified: 2026-10-16