Does Being at High Altitude Make You Urinate More

https://mountainsforeverybody.com/does-being-at-high-altitude-make-you-urinate-more
From my own mountaineering experience, I cannot say with certainty that I urinate more at high altitude. But there are plenty of claims, some probably based on evidence, that this indeed happens.

There is a medical term altitude-induced diuresis which describes the fact that during the initial phases of altitude acclimatization people urinate more.

According to an article, this happens because of the following. Lower level of oxygen is sensed by kidneys which release erythropoetin hormone that is behind increased production of red blood cells. This happens as a natural reaction of our body. It increases the oxygen-carrying capacity of the blood.

With increased red cells, our body tends to dump extra fluid, and this results in excess urine. The process eventually reduces as we become acclimatized. But there is more to this as described below.