When: Late June through September.
Why: Lycopene is highest in very red tomatoes; the antioxidant has a long list of benefits, from protecting skin against the sun's burning rays, to slowing arterial aging, to fighting heart disease, stroke, memory loss and impotence, say Drs. Roizen and Oz.
How: Dr. Roizen notes that it takes 165 raw tomatoes to equal the health perks of just 10 tablespoons of tomato sauce; this easy recipe works as well on pasta as it does as a hot or chilled soup. If you want to enjoy tomatoes raw, try combining them with watermelon in a gorgeous (and gluten-free) salad.