Heart health evidence brief
Higher potassium intake can support blood pressure control, especially in people with hypertension or low dietary potassium, but food and overall diet pattern are the usual first step.
BMJ meta-analysis: increased potassium intake lowered systolic blood pressure by about 3.5 mmHg and diastolic by about 2.0 mmHg in adults.
Prioritize potassium-rich foods unless a clinician recommends supplementation; potassium chloride and high-dose supplements require more caution.
Kidney disease, ACE inhibitors, ARBs, potassium-sparing diuretics, and heart conditions can make extra potassium dangerous.
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