Does it have something to do with the altitude affecting certain organs, or is it entirely unrelated?
In: Biology
The air is dry. 40% of the air is recycled and 60% is pumped in from outside. However at altitude, the “thinness” of the air means it can hold less water vapor per volume as compared to air closer to sea level. So as the air is scooped up and slightly compressed to keep the cabin at pressure, it slowly dilutes the more moist air from the ground with dryer air. Meaning your body is forced to use more water to produce the saliva it needs to keep your mouth and throat moist.
It doesn’t help that the airlines never really provide passengers with an appropriate amount of water because 1)water is heavy and carrying that much water would severely reduce fuel efficiency/capacity 2)having that many people need to use the bathroom regularly on a plane would become problematic fast.
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