Thus, the ???calories??? counted for dietary reasons are in fact kilocalories, with the ???kilo-??? prefix omitted; in scientific notations...conversion into energyTITLE: carbohydrate: Role in human nutritionSECTION: Role in human nutritionThe total caloric, or energy, requirement for an individual depends on age, occupation, and other factors but generally ranges between 2,000 and 4,000 calories