General Question

rebbel's avatar

In winter (during cold weather) I pee more than I usually do. Is this a known phenomenon and, if so, why would that be the case?

Asked by rebbel (23522 points ) February 1st, 2012

We currently have a period of cold(er) days (-6 C/21 F) in the Netherlands, and I have noticed that I need to pee more times during the day.
Not just more frequently, I also feel more pressure (on my bladder/to go).
Can this be?
If so, what is causing this?

Observing members: 0 Composing members: 0

12 Answers

SpatzieLover's avatar

My opinion:
When it’s cold, you don’t sweat out as much liquid as you do during other times of the year. The excess waste water has to come out.

Science opinion:
“A common symptom of cold weather is its effect on urine
production. Exposure to cold causes a reduction in blood flow to the
surface of the skin by constriction of blood vessels. This reduces the overall
volume of the circulatory system so increasing the blood pressure. The body’s
response to this is to reduce the fluid volume by getting rid of water in the
urine. So when you get cold, you want to pee. ”
Source
Scroll down to Getting Cold

Blueroses's avatar

Could it be because the furnace dries out the air and you drink more to stay hydrated?

I’ve actually noticed this phenomenon myself.

Response moderated (Off-Topic)
marinelife's avatar

” . . . yes, patients often do report a greater sense of urinary urgency in the winter, doctors say.”

“Animal studies suggest that cold weather “can induce bladder muscle overactivity,” says Dr. Michael O’Leary, a senior urologic surgeon at Brigham and Women’s Hospital.

People may also make more urine in the winter as in the summer because in warm weather, the body gets rid of more fluid by sweating.”

Boston Globe

XOIIO's avatar

I think also because the body doesnt want to waste heat to keep it warm like the rest of you.

Rarebear's avatar

Yup, when it’s hotter you sweat.

JaneraSolomon's avatar

Cold Diuresis:
“When you feel cold and have cold feet and hands do you have frequent toilet visits? Why? The body protects vital organs from cooling by reducing the blood flow to the outer layers of the body. More warm blood is kept in and around the body’s core, increasing the volume and pressure at the same time. Unfortunately, the brain may perceive this as an unnecessary increase. It instructs the kidneys to extract some of the fluids from the blood and shed it as urine.”
http://www.globalbioweather.com/weather_cold_diuresis.html

Charles's avatar

Can this be?
If so, what is causing this?

We don’t know. Did you actually take data and confirm all these or could it be your imagination?

Rarebear's avatar

Actually, @Charles has the meat of it. It could just be confirmation bias.

rebbel's avatar

I have the data, but I couldn’t possibly publish it.
Plus, I don’t have imagination. ~

vannie's avatar

OMG, this so happens to me when my office is freezing! Whew, I am normal. Or at least my urinary output seems to be. ;-)

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