You waited what felt like a lifetime for this hunt. Don't let altitude sickness cut it short. If you want to learn how to prevent altitude sickness, you need to understand how it can occur. And few ...

Altitude sickness affects up to 75 percent of people who recreate at high elevations. Now, a new study suggests probiotics could play a part in helping hikers resist it.

If you’re planning a getaway at one of these popular high-altitude destinations—from Banff to the Colorado Rocky Mountains—try acclimating in any of these “intermediate altitude” cities first.

Altitude sickness is rare at elevations of less than 8,200 feet but becomes much more common at higher altitudes. Maya Karkalicheva/Moment via Getty Images Equipped with the latest gear and a thirst ...

At last, you’ve arrived in Cuzco, Peru — you’re ready for your dream trek to Machu Picchu. There’s just one problem: You can barely catch your breath, your stomach is churning and, in the morning, ...

The snow is flying, your skis are waxed, the mountain beckons — and you feel rotten, like you drank too much last night. You've got altitude sickness. Air at 8,000 feet contains 25 percent less oxygen ...

Genetic research across multiple studies now points to a clear pattern: populations living in the Andes highlands for ...

They call it the “death zone.” It’s a stretch of Mount Everest that’s about 26,000 feet up and is strewn with something like 200 corpses permanently frozen into the landscape —a warning to other ...

Equipped with the latest gear and a thirst for adventure, mountaineers embrace the perils that come with conquering the world's highest peaks. Yet, even those who tread more cautiously at high ...