Causes Of Orthostatic Intolerance

Astronauts Returning From Space

Just as standing up quickly can cause dizziness and lightheadedness, gravity can have the same effect. When astronauts are returning from space, the blood rushes down their bodies as they reenter the atmosphere. This dramatic change in blood volume disrupts the amount of blood and oxygen reaching the brain and affects blood pressure, heart rate, and oxygen levels, resulting in lightheadedness. The physiological adjustments that occur due to changes in body posture and atmosphere cause issues with spatial awareness and within the cardiovascular and respiratory systems. The body undergoes pressure with these changes and must adapt to significant adjustments necessary for organ function.

Get to know more about what factors contribute to orthostatic intolerance by reading more now.