a body loses  2500 ml / day of fluid.
a body loses  2500 ml / day of fluid.
how much fluid does a body lose a day?
~ 2500 ml / day
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fluid rich with oxygen, vitamins and other nutrients passes all the time from the capillaries (the smallest blood vessels) into the surrounding tissues, where it is known as tissue fluid or interstitial fluid. this fluid nourishes the cells and eventually should return to the capillaries. water retention is said to occur as a result of changes in the pressure inside the capillaries, or changes that make the capillary walls too leaky (see edema and vascular permeability). if the pressure is wrong, or the capillaries are too leaky, then too much fluid will be released into the tissue spaces between the cells. sometimes so much fluid is released that it cannot all return to the capillaries and remains in the tissues, where it causes the swelling and waterlogging which is experienced as water retention.
water retention (medicine)