People with controlled high blood pressure who ate more potassium-rich foods experienced fewer side effects or discomfort after a year compared to those who kept their usual diet.

For people with high blood pressure, eating more potassium-rich foods leads to higher potassium levels in their bodies after a year, as measured by food records and urine tests.

For people with controlled high blood pressure, eating more potassium-rich foods lets them take much less blood pressure medicine after a year—only a quarter of what they started with, compared to 60% for those who didn't change their diet.

People with controlled high blood pressure who ate more potassium-rich foods were more likely to manage their condition with less than half their original medication dose after a year—81% compared to 29% in those who didn't change their diet.

Eating more potassium-rich foods doesn't change how much salt is passed in urine or body weight for people with high blood pressure over a year.

When people with controlled high blood pressure eat a meal high in potassium, their blood potassium levels go up significantly compared to a low-potassium meal, especially within an hour and two hours after eating.