Conversely, several heart-failure medicines are now in use to treat altitude sickness or help with acclimatization, researchers say.

WSJ: Mayo Clinic Researchers on Everest Study High Altitude's Effects on the Body

The University of Colorado researchers are studying molecular mechanisms of normal acclimatization in healthy people to gain new treatment ideas for people with chronic obstructive pulmonary disease, or COPD, a common lung disease.

WSJ: Mayo Clinic Researchers on Everest Study High Altitude's Effects on the Body