Ann: Canada Provides Further Export Credit Support for Kachi, page-80

“The Sherpa community is so powerful that they can be easily called as Superhumans. Their ability to live and not just survive but live a healthy lifestyle on mountain peaks, where there is a dearth of oxygen, has surprised scientists.

It is almost safe to say that this community has it in their genes and this has developed over decades. Their community gives others a motivation to climb, but we must understand that they are much different than normal humans, they have evolved and developed ways to live with less oxygen over years. If an average climber reaches 8000 ft above sea level, they will feel a shortage of oxygen, their blood pressure might even rise and, in some cases, the brain develops a swelling which is life-threatening.

These are the risks that a climber would face at 8000 ft, but the Sherpas live above an average altitude 14,000 ft.”

https://www.google.com.au/amp/s/timesofindia.indiatimes.com/travel/destinations/sherpas-unwavering-guards-of-the-himalayas/amp_articleshow/77409094.cms