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A member asked:

If the caffeine cause vasoconstriction of the kidney then the glumerolus is also vasoconstricted, then why do we void a lot if we drink coffee?

A doctor has provided 1 answer
Dr. Michael Jones answered

Specializes in Family Medicine

Diuretic: Caffeine is a diuretic. Diuretics cause the kidney to allow more water to "leak out" into the urine. Also, vasoconstriction causes increased hydrostatic pressure.

Answered 3/1/2017

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