1 Colitis: Inflammation of the colon. Inflammatory bowel disease or infections are the most common causes.  Diverticulosis: Small weak areas in the colon's muscular wall allow the colon's lining to protrude through, forming tiny pouches called diverticuli.
Dark green leafy vegetables are great sources of nutrition. Salad greens, kale and spinach are rich in vitamins A, C, E and K, and broccoli, bok choy and mustard are also rich in many of the B-vitamins.he vitamin K contents of dark green leafy vegetables provide a number of health benefits including: protecting bones from osteoporosis and helping to prevent against inflammatory diseases. Because of their high content of antioxidants, green leafy vegetables may be one of the best cancer-preventing foods.
Dark green leaf lettuce is high in folate and fiber. Dark green vegetables are a subgroup of the vegetable food group, one of five main food groups established by the U.S. Department of Agriculture to promote healthy eating.alad Greens. Dark leafy salad greens, including leaf lettuce and non-lettuce greens, make up a significant portion of the dark green vegetable subgroup. Varied in texture and flavor, these mostly non-bitter greens are typically used in fresh salads.