The Many Health Benefits of Potassium Counter-balance your sodium intake and and eat more potassium. Adding potassium to your diet can be beneficial for your blood pressure. In addition to bananas, starchy vegetables, fruits and legumes are all high in potassium. Potassium can also be found in milk and yogurt. Baked potatoes, carrot juice, white beans and tomato puree all contain significant amounts of potassium. Potassium is an electrolyte that can help regulate your body's fluid balance. Potassium is also very beneficial for bone strength.