"Foods That Fight Cancer: Dark Green Leafy Vegetables" greens healthiest foods on the planet spinach romaine lettuce Leafy Greens greens greens leafy greens, kale Source Foods that Fight Cancer: Spinach greens AICR's Foods that Fight Cancer™: Dark, Leafy Greens Foods that Fight Cancer: Dark Leafy Greens leafy greens, long-term health "Foods That Fight Cancer: Dark Green Leafy Vegetables" greens Spinach Foods that Fight Cancer: Spinach and Leafy Greens cancer fighting foods Foods that Fight Cancer: Dark Leafy Greens greens remove unstable molecules called free radicals Kale Kale cancer fighting foods spinach spinach kale American Institute for Cancer Research spinach Learn more at aicr.org Foods that Fight Cancer: Dark Leafy Greens AICR's Foods that Fight Cancer™: Dark, Leafy Greens Spinach romaine lettuce romaine lettuce remove unstable molecules called free radicals spinach spinach spinach AICR's Foods that Fight Cancer™: Dark, Leafy Greens greens Foods that Fight Cancer: Dark, Leafy Greens healthiest foods on the planet