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A calorie deficit (British English: calorific deficit) is any shortage in the number of calories consumed relative to the number of calories needed for maintenance of current body weight (energy homeostasis). To reduce 1 kg of weight, about 7000 kcal deficit is required.

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  • A calorie deficit (British English: calorific deficit) is any shortage in the number of calories consumed relative to the number of calories needed for maintenance of current body weight (energy homeostasis). A deficit can be created by decreasing calories consumed by lower food intake, such as by swapping high-calorie foods for lower calorie options or by reducing portion sizes. A deficit can also be created by increasing output (burning calories) without a corresponding increase in input. Increased output is created by increasing physical activity, from increased caloric requirements necessary to heal an injury, or from growth. There are also some substances, including caffeine, which can create a small (3-5%) increase in caloric expenditure, via a variety of pathways that include increasing physical activity levels and increasing thermogenesis (heat output), and/or by reducing caloric input via appetite suppression. Drugs and herbal treatments creating a more extreme metabolic effect exist; however, they cause extreme increases of heart rate and thermogenesis that can cause death in even very healthy and athletic individuals, and these drugs are not widely sold. As the calories required for energy homeostasis decreases as the organism's mass decreases, if a moderate deficit is maintained eventually a new (lower) weight will be reached and maintained, and the organism will no longer be at caloric deficit. A permanent severe deficit, on the other hand, which contains too few calories to maintain a healthy weight level, will eventually result in starvation and death. To reduce 1 kg of weight, about 7000 kcal deficit is required. (en)
  • Kaloriunderskott betyder att man tar in färre kalorier än man gör av med. Framförallt används uttrycket när man vill gå ner i vikt, då ett sådant resultat kräver att man intar mindre energi än man gör av med. Motsatsen till kaloriunderskott är kaloriöverskott, där man tar in mer energi än kroppen gör av med och därmed lagrar energin i form av fett och/eller muskler. Många moderna dieter innebär att man reducerar sin konsumtion av mat, vilket i sin tur leder till kaloriunderskott och viktnedgång. Det är rekommenderat att rådfråga läkare innan man äter en kost vars syfte är kaloriunderskott. Näringsbrist kan leda till försämrad ämnesomsättning, lägre bentäthet och en rubbad hormonbalans. Livsmedelsverket rekommenderar att kvinnor mellan 18 och 30 får i sig runt 2 300 kcal per dag. Män i samma ålder rekommenderas ett intag kring 2 800 kcal. (sv)
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  • A calorie deficit (British English: calorific deficit) is any shortage in the number of calories consumed relative to the number of calories needed for maintenance of current body weight (energy homeostasis). To reduce 1 kg of weight, about 7000 kcal deficit is required. (en)
  • Kaloriunderskott betyder att man tar in färre kalorier än man gör av med. Framförallt används uttrycket när man vill gå ner i vikt, då ett sådant resultat kräver att man intar mindre energi än man gör av med. Motsatsen till kaloriunderskott är kaloriöverskott, där man tar in mer energi än kroppen gör av med och därmed lagrar energin i form av fett och/eller muskler. Livsmedelsverket rekommenderar att kvinnor mellan 18 och 30 får i sig runt 2 300 kcal per dag. Män i samma ålder rekommenderas ett intag kring 2 800 kcal. (sv)
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  • Caloric deficit (en)
  • Kaloriunderskott (sv)
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