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What percentage of adult men's weight is body water? And can you use body water percentage to measure hydration?

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Dr. Hesham Hassaballa
Internal Medicine - Pulmonary Critical Care

In brief: 60%

In a male, 60% of body weight is water. In women, it is 50%.
You typically cannot use body water percentage to measure hydration. The best way to hydrate is to thirst: that is the most powerful stimulus for drinking water. Also, if your urine is dark, that usually means you are dehydrated as well.

In brief: 60%

In a male, 60% of body weight is water. In women, it is 50%.
You typically cannot use body water percentage to measure hydration. The best way to hydrate is to thirst: that is the most powerful stimulus for drinking water. Also, if your urine is dark, that usually means you are dehydrated as well.
Dr. Hesham Hassaballa
Dr. Hesham Hassaballa
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