Science Compared Every Diet, and the Winner Is Real Food "Katz and Yale colleague Stephanie Meller published their findings in the current issue of the journal in a paper titled, 'Can We Say What Diet Is Best for Health?' In it, they compare the major diets of the day: Low carb, low fat, low glycemic, Mediterranean, mixed/balanced (DASH), Paleolithic, vegan, and elements of other diets. Despite the pervasiveness of these diets in culture and media, Katz and Meller write, 'There have been no rigorous, long-term studies comparing contenders for best diet laurels using methodology that precludes bias and confounding. For many reasons, such studies are unlikely.' They conclude that no diet is clearly best, but there are common elements across eating patterns that are proven to be beneficial to health. 'A diet of minimally processed foods close to nature, predominantly plants, is decisively associated with health promotion and disease prevention.'"