May 27, · Summary Most of the human body is water, with an average of roughly 60%. The amount of water in the body changes slightly with age, sex, and hydration levels. While the average percentage of water Author: Claire Sissons. Feb 11, · The amount of water in the human body ranges from %. 1 The average adult human body is % water, averaging around %. The percentage of water in infants is much higher, typically around % water, dropping to 65% by one year of age. 2 .
Despite continuous water losses and wide variations in water and salt intakes, the human body generally has the ability to maintain a tight constancy in water content: total body water is estimated to vary by less than 1% over 24 hours (Cheuvront et al. ). This is of primary importance for the maintenance of a constant composition of. The human body can last weeks without food, but only days without water. The body is made up of 50 to 75 per cent water. Water forms the basis of blood, digestive juices, urine and perspiration, and is contained in lean muscle, fat and bones.
Dec 02, · You can get a rough estimate of the total body water volume on the assumption that the average human adult male consists of approximately 60% water and the average adult female is approximately 50% of water. However, compared to several other advanced methods, the formula developed by dr. P.E. Watson gave the best overall results. Oct 14, · Water is your body's principal chemical component and makes up about 50% to 70% of your body weight. Your body depends on water to survive. Every cell, tissue and organ in your body needs water to work properly.
Chemical composition of the body Chemically, the human body consists mainly of water and of organic compounds —i.e., lipids, proteins, carbohydrates, and nucleic acids. Water is found in the extracellular fluids of the body (the blood plasma, the lymph, and the interstitial fluid) and within the cells themselves.