If you want a mouthful of nutrition, eat a salad and learn about carotenoids and polyphenols. The terms are technical but they help understand why brightly colored plant-based foods, some whole and some raw, are the key to optimal nutrition.   Dr. Kahn discusses the carotenoids in Memory Health, and also another one with heart support called astaxanthin. He then moves to the classes of polyphenols found in chocolate, teas, apples, and onions like quercetin. You will be smarter and healthier for the listen.