Energy Density 2 articles

Energy density describes how much energy a food provides relative to its weight, commonly expressed as calories per gram. Foods with substantial water, such as many fruits, vegetables and broth-based soups, tend to be less energy-dense, while oils, nuts and other high-fat foods provide more calories in a smaller mass. The concept is useful for comparing portion volume with calorie content. It is not the same as nutrient density: a food can be energy-dense and still provide valuable nutrients, or low in energy without being especially nutrient-rich.