Tomatoes, which contain the antioxidant lycopene, are a superfood. Eat some avocado at the same time and you’ve got a super superfood — the fat in the avocado helps the body absorb seven times more lycopene. “Eating a steak or any fatty food with any vegetable can release its antioxidants,” says Steven J. Schwartz, Ph.D., professor of food science at Ohio State University in Columbus. “But small amounts of healthy unsaturated fats are a better choice.” So add a little extra-virgin olive oil to your zucchini, spinach, and other dark green vegetables to unleash the carotenoid lutein, an antioxidant that may help protect against age-related macular degeneration. And instead of using fat-free dressing on your salad, drizzle on an olive oil–based one.