Arguably the most well-known potassium-rich food, bananas are a top pick from both experts. According to the National Institutes of Health (NIH), one medium-size banana contains 422 milligrams (mg) of ...

In six men who ingested a constant whole-foods diet containing (per 70 kg body wt) 27 mmol/day Pi and 52 mEq/day K+, we increased diet K+ to 156 mmol/day with supplements first of potassium ...