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Daily water intake for a adult man?

2 doctor answers2 doctors weighed in
Dr. J. Lawrence Dohan
Dermatology 57 years experience
Silly: There is a common, silly, urban legend about "hydration". The amount of fluid required depends on the individual, the temperature and humidity, the activity, the diet. Consuming very large volumes of water to produce large volumes of dilute urine is a good strategy to manage urinary stones and urinary infections. But is is otherwise silly unless the person enjoys frequent, copious urination.
Dr. James Ferguson
Pediatrics 46 years experience
Simple: No water is necessary.Fluid value in foods or other liquids can easily meet the daily hydration need.As long as they take in enough hydrating materials to pee every 6-8 hours and maintain normal activities they have done enough.

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