Potassium is an essential nutrient that allows your body to function optimally. A meal plan rich in potassium allows proper nerve function and regulates your heartbeat. However, certain conditions such as kidney diseases and consuming food rich in potassium excessively may increase its levels in your bloodstream leading to a condition known as hyperkalemia . Let’s look at foods you should limit to keep your potassium within normal levels. Bananas The first food that comes to mind when people think of potassium sources is bananas. One medium-sized banana contains almost 422 mg of potassium. Though it would take a lot of bananas to cause an overdose of potassium, if you are also eating other foods rich in potassium, it will lead to excessive potassium levels in your blood, which in turn, will trigger hyperkalemia . Tomato Sauce and Paste Raw tomatoes contain a decent amount of potassium. One medium tomato has about 292 mg of potassium. Concentrated forms of tomatoes, such as sauces, salsa, paste, puree, etc., contain even higher amounts of potassium. For instance, a small cup of tomato sauce contains almost 728 mg potassium. So, it is advised to skip tomato sauce and opt for alternatives such as basil or roasted red peppers.