The National Academy of Sciences urges adults to eat a wholesome variety of greens and fruits every day. These foods, if properly grown, selected, and delivered, are bundles of natural health. The United States Department of Agriculture (USDA) declared that nutrient-dense greens such as spinach and kale and berries, may be beneficial in slowing the signs of mental and physical aging. In addition to the USDA and the National Academy of Sciences, the American Heart Association, American Cancer Society and American Diabetes Association also urge people to consume more greens and fruits in their daily diets, and many responsible voices also urge that these foods are best if certified organic and grown "naturally", not chemically. Freeze drying is widely recognized as the best way to instantly capture and preserve the vital integrity of the whole certified organic food. The finished foods retain their optimal color, shape, flavor and nutritional values, and what"s more they are concentrated up to 10 times their original form. Freeze drying also preserves fiber content, so Berry Green® provides the digestive benefits of wholesome plant fibers. Some of nature"s most revered foods are probiotic foods that are cultured with "friendly flora" like lactobacilli. Probiotic foods include yogurt, kefir, miso, wine and sauerkraut. Science has learned that cultured foods are easy to digest, and the culturing process creates life-enhancing nutrients. Included in each serving of Berry Green are 15 different nutrient-dense organic vegetables, fruits, grains and herbs that have been cultured by 10 of nature"s most researched friendly flora, then freeze dried to maintain the viability of the live active culture. In our opinion, green grasses like those included in many "greens" products are best suited for horses and cows and are not an optimal food for humans. These grasses are inexpensive compared to the freeze-dried and certified organic vegetable greens in Berry Green.