However, a large calorie deficit will also create the risk of losing muscle tissue.

It noted that she had received their midday ration and indicated a large calorie balance.

Let's call the large calorie a kilocalorie (abbreviated kcal) and set it equal to 1000 calories.

Sometimes, in an attempt to avoid confusion, the large calorie is written as "Calorie" (with a capital "C").

One small calorie is approximately 4.2 joules (one large calorie or kilocalorie is therefore approximately 4.2 kilojoules).

In spite of its non-official status, the large calorie is still widely used as a unit of food energy in the US, UK and some other Western countries.

Sometimes the two have been distinguished as "small calorie" and "large calorie"; or "gram-calorie" and "kilo- gram-calorie"; or even "calorie" and "Calorie."

An older metric system unit of energy, still widely used in food-related contexts, is the calorie; more precisely, the "food calorie", "large calorie" or kilocalorie (kcal or Cal), equal to 4.184 kilojoules.

The small calorie is also often used in chemistry as the method of measurement is fairly straightforward in most reactions, though the amounts involved are typically expressed in thousands as kcal, an equivalent unit to the large calorie.

The large calorie, kilogram calorie, dietary calorie or food calorie (symbol: Cal) approximates the energy needed to increase the temperature of 1 kilogram of water by 1 C. This is exactly 1,000 small calories or about 4.2 kilojoules.