What are early warning signs of hypoxia?

Blurred vision and air hunger are significant early warning signs of hypoxia, as they indicate that the body is not receiving sufficient oxygen. Blurred vision can occur when the brain is deprived of adequate oxygen, affecting various neurological functions, including visual processing. Air hunger refers to the sensation of not being able to breathe adequately or feeling a strong urge to breathe. This sensation often manifests as an awareness of increased respiratory effort, signaling that the body's demand for oxygen is not being met.

Being cognizant of these symptoms is crucial for pilots. Recognizing early signs of hypoxia allows individuals to take corrective actions before the condition worsens, which can lead to more severe symptoms such as confusion or loss of consciousness. Understanding these physiological responses will help ensure better safety practices while flying, particularly at high altitudes where the likelihood of hypoxia increases.