This snip -it from Shape Magazine, provides another incentive for mixing up your veggies:
Stop the Clock Foods
To live longer, toss more orange and dark green veggies into your cart. According to a study recently published in the Archives of Internal Medicine, people who ate the most carrots, Swiss chard, and other vegetables (and fruits) rich in alpha-carotene had 39% lower risk of premature death from heart disease, cancer and other illnesses than those who ate the least. Researchers believe that the antioxidant, a close cousin to beta-carotene, works by counteracting oxygen-related damage to DNA. While most people get their alpha-carotene from carrots, “canned pumpkin and orange juice are also good sources,” says lead researcher Chaoyang Li, M.D., Ph.D. Try using OJ in your next marinade or vinaigrette, and mixing pumpkin puree into yogurt yogurt or oatmeal.