Energy (measured as kilojoules) comes in the form of fat (37 kilojoules per gram), alcohol
kilojoules per gram), protein (17 kilojoules per gram), carbohydrate 16 kilojoules per gram)
dietary fibre of the kind which is broken down in the large intestine (about 13 kilojoules per
see WHAT WE KNOW ABOUT DIETARY FIBRE). (See also KILOJOULES ARE MORE
FATTENING THAN CALORIES).
It is easier to overeat foods of higher energy density (more kilojoules per gram), like fatty foods, than those of lower energy density. Lower energy dense foods, especially plant foods containing dietary fibre, carbohydrate and water, are generally more bulky and give a feeling of fullness.