14 Foods To Keep Your Kidneys Healthy 1. Red bell peppers are good for kidney health as they are low in potassium. They also add color and taste to the dish, along with vitamins C, B6, A, folic acid and fiber. Red bell peppers contain the antioxidant lycopene that helps to protect against some types of cancer. We can add red bell peppers with tuna, chicken salad or just eat raw.
