Nutrient Density is a critical concept  by Dr. Joel Fuhrman. Not merely vitamins and minerals, but adequate consumption of phytochemicals is essential for proper functioning of the immune system and to enable our body’s detoxification and cellular repair mechanisms that protect us from chronic diseases. To guide people toward the most nutrient dense foods, Dr. Fuhrman developed a 0-100 scale of micronutrient scores called the Aggregat Nutrient Density Index, ANDI which ranks categories of foods based on their ratio of nutrients to calories.

His formula is this:

Your health (H) is predicted by your nutrient intake (N) divided by your calorie intake (C).