For the third year in a row, the Mediterranean diet has been named the best diet overall in the U.S. News & World Report annual rankings. In 2018, the Mediterranean diet shared top honors with the DASH (Dietary Approaches to Stop Hypertension) diet.

Both focus on fruits, vegetables, and whole grains. The ketogenic diet, one of the most popular, again fared well in the annual survey, but only in the fast weight loss category. Overall, it was not rated highly.