For the second consecutive year, the Mediterranean Diet ranks as the No. 1 Best Diet Overall. The DASH Diet, which previously held the No. 1 spot for 8 consecutive rankings and tied with the Mediterranean Diet in 2018, has been bumped to the No. 2 spot for the first time. The Mediterranean Diet, which research suggests can help improve longevity and ward off chronic diseases, also claims the top spot in multiple other categories: Easiest Diets to Follow, Best Diets for Healthy Eating, Best Diets for Diabetes and Best Diets for Heart Health (tie). The Flexitarian Diet takes the No. 3 spot overall, followed by WW (Weight Watchers) and the MIND Diet tied for fourth.