![]() It is used in advanced medical examinations and research. However, body water assessment with this method is not practically usable as it requires specialization in measurement and expensive laboratory equipment. The patient is given an oral dose, blood and saliva samples are taken at 2-4 hour intervals and analyzed using the infrared spectroscopy. ![]() It is the deuterium dilution method that is well-known and most accepted by Schoeller et al. In dilution methods, by giving a substance to the compartment to be measured, the concentration of said substance in the samples taken is measured. For a 70-kg individual with 14 kg of fat (20%), a 10% body water loss increases the fat percentage to 21.5%.īody water measurement methods and devices in the literature The Bioelectrical Impedance Analysis (BIA) method is one of the most recognized of them. For example, the methods that estimate the body fat percentage by making use of body water mass will give seriously misleading results. Therefore, even if there are many body water measurement methods in the literature, it is of great importance for what purpose and under what conditions these methods are used. However, in case of heavy diarrhea or physical activities performed in extremely hot environments, this rate can reach 2 liters within 1 hour. Approximately 2-3 liters (L/day) of water change place daily in our body. However, estimation or determination of the total amount of body water is not so easy as it is a dynamic situation. the Fat Mass and the Fat Free Mass (FFM) can be estimated based on the assumption that Fat Free Mass contains 72% – 73% water. However, the total amount of the body water is an important data in estimating the body composition. For example, according to the Institute of Medicine, this rate is at the level of 10%. The water contents of various tissues differ, but 70-80% of lean tissue usually consists of water, while the fatty tissue contains about 20% water, but there is no clear rate agreed on by academics. In addition, all our vital organs contain a different amount of water: while the brain, lung, heart, liver and kidneys – contain between 65% and 85% of water depending on the organ – the bones contain less water (but still this rate is still 31% ).Įxcept for those with obesity, water is the largest component of the body, making up 50-70% of the total mass. In fact, the amount of body water varies depending on certain factors: the body of a newborn baby (75%) consists of more water than the body of an elderly person (50%). 10 liters of which are interstitial fluid (including lymph), an aqueous medium that surrounds the cells.1 liter of which is transcellular fluid (cerebrospinal fluid, ocular, pleural, peritoneal and synovial fluids),.For example, a 70-kilo man consists of approximately 42 liters of water: The total body water is kept in three major locations: intracellular fluid (two thirds of water), extracellular water fluid, and in our blood (one third of water). Most of the body water is inside our cells. On average, 60% of an adult human body consists of water (between 50%-70%). ![]() Body Composition Values – Total Body Water -1
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