Dahlia Marin, a certified gastrointestinal nutritionist and registered dietitian, shares her insights from the U.S. News & World Report's Best Diets rankings. She reveals the detailed evaluation process behind ranking 38 diets, emphasizing the top performance of plant-based options like the Mediterranean and Ornish diets. Discussion also includes specific diets for health conditions, consumer motivations for dieting, and the connection between gut health and brain function. Marin reflects on managing personal biases in her assessments and highlights future events in plant-based nutrition.