Aggregate Nutrient Density Index (ANDI) is a score assigned to whole foods that contain the highest nutrient

Nutrient

A nutrient is a chemical that an organism needs to live and grow or a substance used in an organism's metabolism which must be taken in from its environment. They are used to build and repair tissues, regulate body processes and are converted to and used as energy...

s per calorie

Calorie

The calorie is a pre-SI metric unit of energy. It was first defined by Nicolas Clément in 1824 as a unit of heat, entering French and English dictionaries between 1841 and 1867. In most fields its use is archaic, having been replaced by the SI unit of energy, the joule...

 as Dr. Joel Fuhrman

Joel Fuhrman

Joel Fuhrman, MD , is an American board-certified family physician who specializes in nutrition-based treatments for obesity and chronic disease. He is a member of the board of directors of the American College of Lifestyle Medicine, and serves as Research Director of the Nutritional Research...

 describes in his book, Eat For Health. Each of these whole foods is given a score based on the equation H=N/C, which is that the health of a food is equal to the nutrients it delivers per calorie. Each ANDI score is based on a possible score of 1,000-0, with 1,000 being the most nutrient dense

Nutrient density

The term nutrient density has several meanings.Most commonly, nutrient density is defined as a ratio of nutrient content to the total energy content . Nutrient-dense food is opposite to energy-dense food...

 and 0 being the least nutrient dense. Kale

Kale

Kale is very high in beta carotene, vitamin K, vitamin C, lutein, zeaxanthin, and reasonably rich in calcium. Kale, as with broccoli and other brassicas, contains sulforaphane , a chemical with potent anti-cancer properties. Boiling decreases the level of sulforaphane; however, steaming,...

, Mustard greens, Collard Greens

Collard greens

Collard greens are various loose-leafed cultivars of Brassica oleracea , the same species as cabbage and broccoli. The plant is grown for its large, dark-colored, edible leaves and as a garden ornamental, mainly in Brazil, Portugal, the southern United States, many parts of Africa, Montenegro,...

, and Watercress

Watercress

Watercresses are fast-growing, aquatic or semi-aquatic, perennial plants native from Europe to central Asia, and one of the oldest known leaf vegetables consumed by human beings...

 all receive a score of 1,000 using the H=N/C equation, while foods like meat

Meat

Meat is animal flesh that is used as food. Most often, this means the skeletal muscle and associated fat and other tissues, but it may also describe other edible tissues such as organs and offal...

, seafood

Seafood

Seafood is any form of marine life regarded as food by humans. Seafoods include fish, molluscs , crustaceans , echinoderms . Edible sea plants, such as some seaweeds and microalgae, are also seafood, and are widely eaten around the world, especially in Asia...

, and dairy products receive scores below 50 and are not considered by Dr. Fuhrman to be healthy. Fuhrman argues in his book that a nutrient dense diet

Diet (nutrition)

In nutrition, diet is the sum of food consumed by a person or other organism. Dietary habits are the habitual decisions an individual or culture makes when choosing what foods to eat. With the word diet, it is often implied the use of specific intake of nutrition for health or weight-management...

 can prevent or even reverse diseases and also might reverse obesity

Obesity

Obesity is a medical condition in which excess body fat has accumulated to the extent that it may have an adverse effect on health, leading to reduced life expectancy and/or increased health problems...

.

The system has been adopted by Whole Foods Market

Whole Foods Market

Whole Foods Market is a foods supermarket chain based in Austin, Texas which emphasizes "natural and organic products." The company has been ranked among the most socially responsible businesses and placed third on the U.S...

grocery stores for certain items.