High Potassium can cause dangerous heart rhythms and make the heart suddenly stop beating. A 2026 BMJ review examines high Potassium, its causes, and ways to manage it. It brings together existing evidence rather than testing one new treatment. The review covers both urgent care and long-term care. It highlights people with ongoing kidney disease, heart failure, or diabetes. People taking medicines that reduce how much Potassium the kidneys remove also face greater risk. The review points to two main ways blood levels can rise. First, the kidneys may not remove enough from the body. Kidney disease and some medicines can cause this. Second, Potassium can move from inside cells into the blood. Too much acid in the blood, tissue breakdown, and too little insulin can drive that shift. The authors also describe differences in how care teams define and manage high levels. Newer medicines that bind Potassium have expanded treatment options. However, the supplied summary gives no patient counts or treatment results. It also gives no blood-level cutoff for danger. This is an overview of current evidence, not proof that one routine works best. For BioSocial members, the useful takeaway is that context matters alongside the number. A record of blood results, kidney health, and medicine changes can support clearer community discussions. Comparing notes may reveal shared experiences, but matching results do not prove matching causes. Tracking those details keeps the conversation focused on more than a single reading. What patterns have you noticed in your Potassium results over time, and what else changed alongside them?