Although most people have trouble getting even the minimal 5-9 servings of fruit and vegetables per day. Recommended by the USDA, it seems that everyone agrees that eating lots of fresh fruits and vegetables is very important for optimal good health. But why are fruits and vegetables so good for us?  Well, apart from being high in vitamins, minerals, and fiber, plant foods are good for us because they’re a rich source of antioxidant compounds called polyphenols.  Polyphenols protect plants from the oxidative stress caused by the sun’s UV rays, and by environmental pollution and pathogens. Humans who eat these plants get many benefits from the polyphenols they contain, including protection from asthma, allergies, cancer, cardiovascular disease and high blood pressure, diabetes and infections, as well as inflammation and premature aging.     Over 8,000 different polyphenols have been identified. Quercetin, the most common polyphenol, is also one of the most important and…