Switching to a salt that has more potassium might raise potassium levels in the blood of older adults living in care homes, and while this can cause a lab result called hyperkalemia, it doesn't seem to cause serious problems like heart rhythm issues or hospital visits.

We analyzed the available evidence and found that switching to potassium-enriched salt may raise blood potassium levels in older adults living in care homes, sometimes leading to a lab result called hyperkalemia — which means higher-than-normal potassium in the blood. However, this increase does not appear to be linked to heart rhythm problems or hospital visits in the studies reviewed [1]. The evidence we’ve reviewed so far comes from one set of observations involving older adults in care settings, and all of it supports the idea that while potassium levels can rise, serious outcomes like arrhythmias or emergency hospitalizations were not reported. We did not find any studies that contradicted this pattern. Hyperkalemia is a measurable change in blood chemistry, but it doesn’t always mean harm — especially when no symptoms or complications follow. What we’ve found so far suggests that for this group, using potassium-enriched salt might be safe in terms of major health events, even if it changes lab values. But we also note that the evidence is limited to a single source of data, and we don’t yet know how this applies to older adults living independently, those with kidney disease, or those taking certain medications that affect potassium. For now, if you’re an older adult or caring for one, switching to potassium-enriched salt may raise blood potassium slightly, but based on what we’ve seen, it doesn’t seem to lead to dangerous heart issues or hospital stays. Still, it’s wise to talk with a doctor before making changes, especially if you have kidney problems or take medications like ACE inhibitors or potassium-sparing diuretics.