We have all heard it before: Eat More Leafy Greens! Why should we do that and what exactly is a leafy green? Why you should “Eat More Leafy Greens” A major problem with the Standard American Diet (SAD) today is we eat too many processed foods. These processed foods contain very low levels of essential nutrients, but lots of calories and fat.  Eating all these processed foods and with very little whole plant foods, provides a diet low in vitamins,