Why You Pee More in the Cold

Cold weather triggers a process called cold diuresis.
Blood vessels constrict to conserve heat, raising blood pressure slightly.
The kidneys respond by removing excess fluid to balance pressure.
This results in more frequent bathroom trips when temperatures drop.
You sweat less in cold weather, so your body expels water through urine instead.
Thick clothing and limited movement can amplify the effect.
Staying warm helps keep your circulation and hydration balanced.
It’s your body’s way of maintaining internal equilibrium in chilly conditions.
That “winter pee rush” is actually a survival reflex.
The cold doesn’t make you drink more—it just makes you excrete more.