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Strawberries (7 grams sugars per cup)

Strawberries are a dieter's best friend: low in calories, high in fiber. (Seeing a berry theme here? That's right: All berries are loaded with fiber and nutrients, making them one of the best possible fruit picks. Just be sure to choose organic strawberries; berries appear prominently on the "Dirty Dozen" list of highest pesticide residues.)

"Strawberries are also an excellent source of vitamin C and flavonoids, promoting lots of antioxidant activity in the body," says Young. Here's a seasonal favorite for adults and kids alike: Easy Strawberry Tart with Oat-Cinnamon Crust.