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Learn about the balance between water intake and excretion, the role of arginine vasopressin, and the disorders of water and sodium homeostasis. Explore chapters and articles from various medical and scientific journals on water metabolism.
Water is the most abundant molecule in the human body that undergoes continuous recycling. Numerous functions have been recognized for body water, including its function as a solvent, as a means to remove metabolic heat, and as a regulator of cell volume and overall function.
Water is quantitatively the most important nutrient. In the past, scientific interest with regard to water metabolism was mainly directed toward the extremes of severe dehydration and water intoxication.
Metabolic water refers to water created inside a living organism through metabolism, by oxidizing energy-containing substances in food and adipose tissue. Animal metabolism produces about 107–110 grams of water per 100 grams of fat, [1] 41–42 grams of water per 100 g of protein, and 60 grams of water per 100 g of carbohydrate. [2][1][3]
2 Σεπ 2009 · Water is the major constituent of the human body. The latter cannot produce enough water by metabolism or obtain enough water by food ingestion to fulfil its needs.
3 Οκτ 2022 · This topic primarily covers the physiologic composition of water in the human body, differentiates the various compartments in the body and their associated volumes and compositions, depicts how to measure the different volumes, and delves into the clinical relevance associated with disturbances of normal physiological conditions.
In addition to changes in water distribution, changes in TBW, blood volume, and ECV also affect overall water balance. A thorough understanding of disorders of water metabolism requires a clear understanding of changes in plasma Na concentration (PNa), plasma osmolality (P osm), and ECV. Key Points: Water Metabolism.
