The following are true regarding water in the body
ExplanationTotal body water (TBW) as a percentage of body weight varies with age. The fetus has a high TBW, which gradually decreases to about 75% of birth weight for a term infant. At puberty, the fat content of females increases more than males, who acquire more muscle mass than females. Because fat has low water content, and muscle has high water content, by the end of puberty TBW in males remains at 60%, but it decreases to 50% of body weight in females. In the fetus and newborn, the ECF volume is larger than the ICF volume.
