The accuracy of the system is disputed, despite no real proposed alternatives. Calorie counting Ĭalorie amounts found on food labels are based on the Atwater system. The related concept of "calorie in, calorie out" is contested by some, despite having become a commonly held and frequently referenced belief in nutritionism. Since 1925, the calorie has been defined in terms of the joule the current definition of the calorie was formally adopted in 1948. The second theorized that obesity development depends on how the body partitions calories for either use or storage.
The first simply avowed Rubner's notion that "a calorie is a calorie". Von Noorden had two theories about what caused people to develop obesity. The law claims that the basis of nutrition is the exchange of energy, and was applied to the study of obesity in the early 1900s by Carl von Noorden. In 1878, German nutritionist Max Rubner crafted what he called the "isodynamic law". " Calorie In Calorie Out" is a tautology used to convey the thermodynamic concept that a " calorie" is a sufficient way to describe the energy content of food. ( Learn how and when to remove this template message) ( March 2019) ( Learn how and when to remove this template message) Please do not remove this message until conditions to do so are met. Relevant discussion may be found on the talk page. The neutrality of this article is disputed.
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