4. Grapes
Like watermelon, grapes are another fruit that has a high water content, which means that they are an excellent natural diuretic. Not only do they improve kidney function, which means that they help to increase the amount of urine the body produces and how much fluid and sodium it releases, but grapes are a great source of several vital nutrients. They contain vitamin C, vitamin K, and they are also a source of healthy carbs. Add to that the fact that grapes have no cholesterol, and you really have healthy food when you choose grapes.