Caloric content is the amount of
calorie (energy nutrients) present in a food. Carbohydrates, proteins and fats are
the three macronutrients that make up all foods and they are the body’s sources
of calorie. Some macronutrients contain more calories per gram than others and
this is because proteins and carbohydrates foods contain 4 calories per
gram while fatty foods contain 9 calories per gram. Potatoes and yam have
the same amount of carbohydrate, so they contain the same number of calories. Alcohol
contains 7 calories per gram.
