Buy Organic: Grapes (Imported)

Grapes are about 80% water, making them a delectable low-calorie snack or dessert. One cup contains about 104 calories, and is packed with vitamins C and K. Raisins (dried grapes) are also a good source of iron. While imported grapes are among the "dirty dozen," this fruit should not be eliminated from your diet if you are unable to buy organic. Instead, eat a variety of grapes from various sources, and wash them well before consuming.