Couple #1: Tomatoes and olive oil
Why? The monounsaturated fat in olive oil supports heart health and helps your body absorb the tomatoes' lycopene, an antioxidant (it may help cells resist disease-causing damage).
Try this pasta sauce: Sauté chopped tomatoes in olive oil with salt, pepper and a little minced garlic; add parsley or basil.

Couple #2: Walnuts and arugula
Why? Arugula (a peppery salad green) packs sulforaphane, which boosts the nuts' selenium, a mineral that may help your body fight cancer. The walnuts also contribute omega-3 oils, known to help control some blood fats.
Try arugula salad with 2 tablespoons of toasted walnuts and 1 of crumbled low-fat goat cheese. Dress it with olive oil and a dash of red wine vinegar.

Couple #3: Salmon and oranges
Why? An enzyme in vitamin C helps you absorb healthful omega-3 fatty acids from salmon and other cold-water fish. The oranges deliver soluble fiber, a possible cholesterol reducer.
Try salmon filet sautéed in light sesame oil with chopped fresh orange sections, cup orange juice, a spritz of lemon juice and a sprinkle of parsley.