total body water


Also found in: Acronyms.

to·tal bod·y wa·ter (TBW),

the sum of intracellular water and extracellular water (volume); about 60% of body weight.

total body water (TBW)

all the water within the body, including intracellular and extracellular water plus the water in the GI and urinary tracts.

to·tal bod·y wa·ter

(tō'tăl bod'ē waw'tĕr)
Sum of intracellular and extracellular water (volume); about 60% of body weight.

total body water

includes the intracellular water and the extracellular water, the latter consisting of the interstitial or tissue fluid and the intravascular fluid or plasma. The extracellular fluids also contain the transcellular fluids that are formed by active transport processes and include saliva, cerebrospinal fluid, and the fluids of the eye and the secretory glands and so on. It may be ingested water or water produced by the body's metabolic processes (metabolic water).

Patient discussion about total body water

Q. I have found that my body weight has high proportion of water in total weight.. I have found that my body weight has high proportion of water in total weight, and it makes me to take less water and there by increasing my thirst, which in turn stresses my body a lot, what can I do to reduce this problem…..?

A. Your body has a way of compensating when it is lacking something. When you are dehydrated, your body will retain fluids, hence the excess water.
drink plenty of water daily and you will find that you will lose this puffiness as your body adjusts to getting what it needs.

More discussions about total body water
References in periodicals archive ?
Phillips SM, Bandini LG, Compton DV, Naumova EN, Must A: A longitudinal comparison of body composition by total body water and bioelectrical impedance in adolescent girls.
Body composition changes after SCI include muscle wasting, fat accumulation, a rapid loss of bone mineral within the first eighteen months of injury, and a reduction in total body water due to the decrease in muscle mass (9).
The day before the start of the race and after every stage, within one hour after arrival at the finish line, every participant underwent anthropometric measurements, bioelectrical impedance analysis (BIA), and the collection of urinary samples in order to determine body mass (BM), skeletal muscle mass (SM), percent body fat (% BF), lean body mass (LBM), and percent total body water (% TBW).
Seasonal changes in total body water extracellular fluid and blood volume in grazing reindeer.
There may be differences in the mineral and bacterial composition of the various tap, distilled, spring, and bottled water but unless these solutions contain solutes that are impermeable to the cell membrane, these apparent "differences" would not influence the distribution of total body water.
Estimation of total body water in pinnipeds using hydrogen-isotope dilution.
Total body water (TBW) volume can by measured in humans by administering an oral dose of an isotope tracer, such as [sup.
The panel said that the diuretic effect "may be transient in nature" and that there is no convincing evidence that it leads to cumulative total body water deficits.
Professor Wendy Slutske, who polled 1,230 students at the University of Missouri-Columbia, said: "This finding makes biological sense because women tend to weigh less and have lower percentages of total body water.

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