At what altitude is most altitude sickness commonly reported?

Most altitude sickness is commonly reported at around 10,000 feet. This altitude is significant because it marks a transition point where many individuals start experiencing the effects of lower oxygen availability. Above this elevation, the atmospheric pressure decreases, resulting in a reduction in the partial pressure of oxygen and leading to physiological challenges for the body.

At 10,000 feet, many people can begin to feel symptoms such as headache, nausea, dizziness, and fatigue, which are indicative of Acute Mountain Sickness (AMS). The risks tend to increase with higher altitudes, which is why this altitude serves as a key reference point for understanding altitude-related health issues. While altitude sickness can occur at lower elevations for some sensitive individuals, 10,000 feet is widely recognized in the medical community as a threshold where symptoms are commonly acknowledged and reported.