MRC_Hans
Penultimate Amazing
- Joined
- Aug 28, 2002
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Kumar said:Mr.Hans,
Yes, it is good to drink more water except in some renal failure & over-hydration conditions. But how much water contribute to blood volume is to be understood?
Water only contributes to blood volume as long as you are dehydrated. Once normal level is reached, the water is passed by the kidneys, but a (reasonable) surplus of water intake makes it ieasier for the body to maintain the right level and to fluch out various other excess substances.
"Water accounts for about 60% of a man's body weight. It represents about 50% of a woman's weight. Mild dehydration is the loss of no more than 5% of the body's fluid. Loss of 5-10% is considered moderate dehydration. Severe dehydration (loss of 10-15% of body fluids) is a life-threatening condition that requires immediate medical care." Blood volume is appx. 5 ltrs in a 70Kg person. Total water in body of 70Kg. will appx be 43Kgs in man & a 10% dehydration mean 4.3 kg water. How then this dehydration contribute to blood volume is important to understand. Depending upon this we can calculate BG & Sodium imbalances accordingly.
Why don't you actually READ the text you quote? It clearly says that except under severe dehydration the contribution is less that 10%.
And no, we cannot calculate BG and sodium levels ("imbalances" is nonsense, what do they balance with?) from water content. Water content may go into the equation, but only as a minor factor.
Dehydration & Overhydration are conditions related to water balance in body.
Duh! Too much water or too little water are related to the amount of water. Where DO you get your insights from, Kumar?
Hans