Superfoods, Better Moods

10 Superfoods for Spring

spring-food-walnuts
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Walnuts

Good for: Mood

Walnuts are packed with tryptophan, an amino acid your body needs to create the feel-great chemical serotonin. (In fact, Spanish researchers found that walnut eaters have higher levels of this natural mood-regulator.) Another perk: "They're digested slowly," Dr. Katz says. "This contributes to mood stability and can help you tolerate stress."

Try this recipe: Walnut Coffee Cake

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