During one ascent, Purja develops symptoms of high-altitude cerebral oedema (brain swelling), a dangerous form of altitude sickness that can strike with little warning. It’s a stark reminder that when ...

Many people are familiar with altitude sickness and the effect it has on the body, but many people often fail to realize that there is a severe form of altitude sickness that even people living at ...

Take it slow when going to higher altitudes to prevent altitude sickness, which can become life-threatening when severe.

Nothing Is Impossible," elite mountaineer Nirmal Purja races up the world's highest summits at extraordinary speed. But even he isn't immune to altitude.