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Weight loss and gain.
In: Salem Press Encyclopedia of Science, 2023-09-01, S. 3
Online
Nachschlagewerk
Zugriff:
Whether a person gains or loses weight is dependent on the balance of energy expended versus energy ingested. Thus, weight is determined by how many kilocalories are in the foods eaten and how many kilocalories of energy are expended. Normal day-to-day fluctuations in weight are typically minor changes attributed to shifts in body fluid and are not related to energy balance (input versus output). Input kilocalories refer to those from fat, protein, carbohydrates, and alcohol. Although alcohol is not considered an energy-yielding nutrient, it provides 7 kilocalories per gram. Output kilocalories are used to maintain the body’s basal metabolism; digest process food; fuel muscular activity for physical exercise; breathe; maintain body temperature; and help the body adapt to environmental changes. When energy intake exceeds output, a person gains weight. When energy output exceeds intake, a person loses weight.
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Weight loss and gain.
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Autor/in / Beteiligte Person: | Stuhldreher, Wendy L., PhD ; DeAngelo, LeAnna, PhD ; Moglia, Paul, PhD |
Zeitschrift: | Salem Press Encyclopedia of Science, 2023-09-01, S. 3 |
Veröffentlichung: | 2023 |
Medientyp: | Nachschlagewerk |
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