This salad takes a little to assemble. But it's nutritional content (chock full of protein and Omega-3 fatty acids) and fantastic taste are well worth it. We're finding out that beans are one of the best foods there is - adding only three cups a week can lower your cholesterol, decrease your cancer risk, and can even promote weight loss. The Omega-3's in tuna increase your good cholesterol, are heart and brain healthy. I've adapted it from a recipe that originally ran in the New York Times.