Dr. Weil considers the traditional Japanese and Mediterranean diets as the healthiest diets in the world. Both incorporate abundant fish, fruits and vegetables. Although the traditional Japanese diet is healthy, it may be challenging for Americans to follow closely, as its cooking techniques and ingredients may be unfamiliar. The Mediterranean diet, however, features foods that are more similar to what most Americans already eat, and so is often easier to adopt.
Read more: Is the Mediterranean Diet Really Healthier?
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