Spinach
Spinach contains lutein and zeaxanthin, two immune-boosting antioxidants important for eye health. Recent research found that among cancer-fighting fruits and veggies, spinach is one of the most effective.
Healthy eating tip: Spinach is a healthy and flavorless addition to any smoothie. Try blending 1 cup spinach, 1 cup grated carrots, 1 banana, 1 cup apple juice, and ice.