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How much water is in the human body?

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When babies are born both male and female are about 78 percent water. As the body ages this changes dramatically. The human male at maturity is about 60 percent water and the adult human female is typically 55 percent water.

Answer

Young adult men average about 55% to 60% water with women averaging slightly less as they have more fat and babies can be as much as 75% water by weight. This can vary from person to person and can be different in different areas due to climate or enviorment.

As to your question, a 70 kg (150 lb) young male has about 40 L of total body water. So... a loss of 4 L is about 10% of a persons body water. This would not be terribly detrimental as the average daily water loss and intake is 2.5 L though natural body processes (e.g., urination, feces, expired breath, sweat).

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First answer by Kermit2006. Last edit by Ranger22. Contributor trust: 2908 [recommend contributor]. Question popularity: 23 [recommend question]

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