(Health Secrets) Eating grapes and other fruits rich in potassium can dissolve uric acid crystals to lessen gout pain and rheumatoid arthritis symptoms. Chilled, baked, roasted, juiced or grilled, grapes enhance all food groups from appetizers to salads and side dishes. Grapes may be eaten straight-up or blended into a fruit juice smoothie with other fruit or vegetable juices to help maintain alkalinity in the blood and urine.Read more.