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Effects of 6-H Exposure to Low Relative Humidity and Low Air Pressure on Body Fluid Loss and Blood Viscosity

Low humidity, pressure, and oxygen environments like those common in airline cabins promote increased blood viscosity according to a March 2013 article published in Indoor Air.  These results were likely due to reduced dietary intake of water and increased loss of water as a result of a low pressure environment.  Compounded with long periods of uninterrupted sitting, environmental conditions of air travel may cause an increase in blood viscosity and promote hemostasis, increasing the risk of clot development during long flights.


Hashiguchi N, Takeda A, Yasuyama Y, Chishaki A, Tochihara Y. Effects of 6-h exposure to low relative humidity and low air pressure on body fluid loss and blood viscosity. Indoor air. 2013.


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