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  2. Food energy - Wikipedia

    en.wikipedia.org/wiki/Food_energy

    Notwithstanding, nutrition labels on Australian food products typically recommend the average daily energy intake of 8,800 kJ (2,100 kcal). The minimum food energy intake is also higher in cold environments. Increased mental activity has been linked with moderately increased brain energy consumption. [24]

  3. List of macronutrients - Wikipedia

    en.wikipedia.org/wiki/List_of_macronutrients

    Fat has a food energy content of 38 kilojoules per gram (9 kilocalories per gram) proteins and carbohydrates 17 kJ/g (4 kcal/g). [2] Water makes up a large proportion of the total mass ingested as part of a normal diet but it does not provide any nutritional value.

  4. Joule - Wikipedia

    en.wikipedia.org/wiki/Joule

    In terms of SI base units and in terms of SI derived units ... kJ: kilojoule: 10 −6 J μJ: ... kilojoule Nutritional food labels in most countries express energy in ...

  5. List of countries by food energy intake - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by_food...

    According to the FAO, the average minimum daily energy requirement is approximately 8,400 kilojoules (2,000 kcal) per adult and 4,200 kilojoules (1,000 kcal) a child. [3] This data is presented in kilojoules, as most countries today use the SI unit kilojoules as their primary measurement for food energy intake, [ 4 ] with the exception of the ...

  6. Calorie - Wikipedia

    en.wikipedia.org/wiki/Calorie

    The calorie is a unit of energy that originated from the caloric theory of heat. [1] [2] The large calorie, food calorie, dietary calorie, or kilogram calorie is defined as the amount of heat needed to raise the temperature of one liter of water by one degree Celsius (or one kelvin).

  7. Specific energy - Wikipedia

    en.wikipedia.org/wiki/Specific_energy

    Energy density is the amount of energy per mass or volume of food. The energy density of a food can be determined from the label by dividing the energy per serving (usually in kilojoules or food calories) by the serving size (usually in grams, milliliters or fluid ounces).

  8. Schofield equation - Wikipedia

    en.wikipedia.org/wiki/Schofield_equation

    The equation that is recommended to estimate BMR by the US Academy of Nutrition and Dietetics is the Mifflin-St. Jeor equation. [3] The equations for estimating BMR in kJ/day (kilojoules per day) from body mass (kg) are: [4] Men:

  9. Empty calories - Wikipedia

    en.wikipedia.org/wiki/Empty_calories

    Granulated sugar provides energy in the form of calories, but has no other nutritional value. In human nutrition, empty calories are those calories found in foods and beverages (including alcohol) [1] composed primarily or solely of calorie-rich macronutrients such as sugars and fats, but little or no micronutrients, fibre, or protein.