Why do people die after coming down from mount Everest?

Several factors contribute to the risk of death after descending from Mount Everest:

Altitude sickness: Mount Everest is located at an altitude of 29,029 feet (8,848 meters), where the air is thin and contains less oxygen. This can lead to altitude sickness, which can cause symptoms such as shortness of breath, fatigue, nausea, vomiting, and headaches. In severe cases, altitude sickness can lead to death.

Hypothermia: The temperature on Mount Everest can drop to -22°F (-30°C), and the wind chill can make it feel even colder. This can lead to hypothermia, which occurs when the body loses heat faster than it can produce it. Hypothermia can cause confusion, disorientation, and eventually death.

Exhaustion: Climbing Mount Everest is a physically demanding task that can take weeks or even months. The combination of high altitude, cold temperatures, and strong winds can lead to exhaustion, which can impair judgment and decision-making. Exhaustion can also make it more difficult to deal with other challenges, such as altitude sickness and hypothermia.

Accidents: The terrain on Mount Everest is treacherous, and there are many dangers, such as crevasses, avalanches, and icefalls. These dangers can cause accidents that can result in death.

Lack of oxygen: The air at high altitudes contains less oxygen, and this can have a negative impact on the heart and lungs. It can also affect physical and mental performance.

Post-climb complications: Even after successfully reaching the summit of Mount Everest, there are risks of post-climb complications, such as pulmonary edema (fluid in the lungs) and cerebral edema (fluid in the brain). These conditions can develop when the body has had too much time to adjust to the lower oxygen levels at the summit.

The combination of these factors makes descending from Mount Everest a dangerous undertaking. Even experienced climbers are not immune to the risks, and even a small mistake can have fatal consequences.