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Kiwi (6 grams sugars per kiwi)

Kiwi, along with fiber, contains lots of vitamin C and vitamin K, plus — surprise — just slightly less potassium than a banana. "Potassium is one of those nutrients that’s absolutely essential for heart health, yet many people don’t get nearly enough," says Young. One healthy and delicious combo: Kiwi and Carambola Tart (if you can't find carambola, aka star fruit, use pineapple).