Among the thousands of different foods our world provides, the majority contain at least several of the nutrients our bodies need but to be included as one of the World's Healthiest Foods they had to meet the criteria listed below.

The criteria we used will also help you understand why some of your favorite (and also nutritious) foods may not be included on our list. For example, Readers have asked why mango, a very nutritious food, is not among the World's Healthiest Foods. While mangoes taste great and are rich in vitamins and minerals, they do not fit our criteria of familiarity and availability.

1. The World's Healthiest Foods are the Most Nutrient Dense

The World's Healthiest Foods have been selected because they are among the richest sources of many of the essential nutrients needed for optimal health. We used a concept called nutrient density to determine which foods have the highest nutritional value.

Nutrient density is a measure of the amount of nutrients a food contains in comparison to the number of calories. A food is more nutrient dense when the level of nutrients is high in relationship to the number of calories the food contains. By eating the World's Healthiest Foods, you'll get all the essential nutrients that you need for excellent health, including vitamins, minerals, phytonutrients, essential fatty acids, fiber and more for the least number of calories.

http://whfoods.com/foodstoc.php#criteria