Super Foods for Kidney Health 12. Red grapes

12. Red grapes

The color in red grapes comes from several flavonoids. These are good for your heart, because they prevent oxidation and reduce the chance of blood clots. One flavonoid in grapes, resveratrol, may boost production of nitric oxide, which increases muscle relaxation in blood vessels for better blood flow. Flavonoids also help protect you from cancer and prevent inflammation.  

Choose those with red or purple skin grapes for the highest flavonoid content. Eat grapes as a snack. When frozen, they make a good thirst-quencher for those on a fluid-restricted diet. Add grapes to fruit or chicken salad. Or drink grape juice.