Factors that cause airplane sickness:

HIGH ALTITUDE: The brain swells with fluid and squeezes the blood brain barrier as air pressure and oxygen levels decrease at higher altitudes. 

LOW HUMIDITY: Low humidity can dry out and inflame the mucous membrane lining your respiratory tract. When this natural barrier is no longer working properly, t increases your risk of colds, the flu, and other infections.

LOW OXYGEN: Without enough oxygen in the blood, organs, including the brain, don’t function properly. As a result, toxins accumulate in the bloodstream and hea-daches ensue. This happens because low oxygen levels initiate the widening of blood vessels.

GERMS: Droplets in the air, like when somebody sneezes, are one of the big causes of colds on airplanes – they can travel up to 12 feet! Additionally, it is nearly impos-sible to avoid touching stu that dozens of people with colds have touched – trays, cups, magazines, sinks. Touch a cold virus germ, then touch your face, and you’ve exposed yourself to the virus.

MOTION: You get motion sickness when your inner ear, eyes, and sensory nerves sense that your body is moving, but the other parts don’t. So when you are in a plane, your inner ear may sense motion, but your eyes may not see the movement.

NEW FOODS: your stomach is not accustomed to the microorganisms in the water and food in many warm weather countries so it rebels until the gut can adjust.


Illustration of traveler seeking high altitude sickness prevention for mountain hikers and everyday flyers