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A 27-year-old male 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?

1 doctor answer1 doctor weighed in
Dr. Michael Jones
A Verified Doctoranswered
Family Medicine 24 years experience
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.
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Last updated Mar 1, 2017

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