A third of Everest climbers can add cardiac arrhythmias to their list of dangers

One in three fit, healthy young men attempting the peak experienced heart rhythm disturbances: study.

Between hypothermia and hypoxia — not to mention the risk of an avalanche and rockfalls — summiting Mount Everest pushes the human body to its limits.

Swiss and Nepalese researchers now report that mountaineers who attempt the peak can add an elevated risk of cardiac arrhythmias to the list of challenges.