The body struggles to produce enough energy, making every step feel like a huge effort. Climbers can become confused, weak, dizzy, and dangerously exhausted. One of the biggest threats is altitude sickness. It can develop when the body cannot adapt to the lack of oxygen. In severe cases, fluid can build up in the brain or lungs, creating a life-threatening emergency.
Then there is the weather. Everest can experience powerful winds, extreme cold, and sudden storms. A climber who is properly equipped can still find themselves in serious danger if conditions change unexpectedly. Visibility can disappear, temperatures can plunge, and finding the correct route can become incredibly difficult.
