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The Harris–Benedict equation (also called the Harris-Benedict principle) is a method used to estimate an individual's basal metabolic rate (BMR).. The estimated BMR value may be multiplied by a number that corresponds to the individual's activity level; the resulting number is the approximate daily kilocalorie intake to maintain current body weight.
In nutrition and food science, the term calorie and the symbol cal may refer to the large unit or to the small unit in different regions of the world. It is generally used in publications and package labels to express the energy value of foods in per serving or per weight, recommended dietary caloric intake, [6] [7] metabolic rates, etc.
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 USA, [5] Canada, [6] and the UK, which use kilocalories or both.
Adds Wilson, “You will subtract about 200-500 calories from your BMR for weight loss. So, for example: If your caloric needs are 1800, you would aim for 1300-1600 calories per day for weight ...
It provides users recommended calorie budgets based on data such as their current weight and their desired weight. [13] [1] Lose It! also tracks data such as exercise/activity level and food consumption [3] [14] [15] and allows users to track calories consumed by scanning barcodes for food products then retrieving calorie information for products.
It is the equation which is behind the 2005 Dietary Guidelines for Americans and the new food pyramid, MyPyramid. The Institute of Medicine equation uses a different approach to most others. The equation doesn't measure basal metabolic rate , but uses experiments based on doubly labelled water .
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Included for each food is its weight in grams, its calories, and (also in grams,) the amount of protein, carbohydrates, dietary fiber, fat, and saturated fat. [1] As foods vary by brands and stores, the figures should only be considered estimates, with more exact figures often included on product labels.
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