Many governments require food manufacturers to label the energy content of their products, to help consumers control their energy intake.
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During the French and Indian War, British military rations contained enough food energy to sustain the soldier in garrison but suffered from a lack of vitamins that could lead to nutritional deficiencies if not supplemented by the soldiers themselves through garden produce or purchase.
Calorie count laws are a type of law that require restaurant chains of fifteen or more to publish detailed food energy and nutritional information on the food served, in a font equal to or larger than the size of the name of the item.