Bananas are just the beginning: almost every food in the plant kingdom, from potatoes to papayas, supplies some amount of potassium. So, it might be surprising to learn that nutrition experts have flagged the mineral as a nutrient of public health concern. That's because most Americans aren't getting enough, and there's evidence that the risks of some common chronic diseases may rise with inadequate potassium intake. The recommended adequate intake is 3,400 milligrams (mg) per day for adult men