The Mediterranean diet is a time-tested and proven way to improve your overall health. Not only does this diet overload your taste buds with some of the tastiest foods in the world, it's also one of the most sustainable ways to lose weight, decrease inflammation, and live a healthier life.The Mediterranean diet is one of the healthiest diets in existence. I wouldn't really call it a diet as much as it's a way of life. People living along the Mediterranean coast have been living this lifestyle for centuries. As a result, it has earned the reputation of being a powerful disease prevention tool.