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Can not drinking enough water cause digestive problems? I am 32 yo male, 175lbs. How much should I be drinking?
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Dr. Dan Fisher
Internal Medicine
In brief: Yes.
Not drinking enough water causes colon to maximally reabsorb water from stool in distal colon producing constipation.
Minimum water intake is driven by obligatory losses which are 1600 ml/day. Minimum fluid intake is therefore 1600 ml per day divided among fluids - 500 cc/day, water in food - 800 cc/day and water derived from metabolism - 300 cc/day. Beating the minimum is a good idea.

In brief: Yes.
Not drinking enough water causes colon to maximally reabsorb water from stool in distal colon producing constipation.
Minimum water intake is driven by obligatory losses which are 1600 ml/day. Minimum fluid intake is therefore 1600 ml per day divided among fluids - 500 cc/day, water in food - 800 cc/day and water derived from metabolism - 300 cc/day. Beating the minimum is a good idea.
Dr. Dan Fisher
Dr. Dan Fisher
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