Higher altitudes can worsen COPD symptoms. People with COPD may need supplemental oxygen when staying at higher altitudes or flying in a plane. At higher elevations, your body needs to work harder ...

Discover why combining alcohol with high-altitude sleep can strain the heart and reduce oxygen levels, especially concerning older adults. Alcohol consumption during sleep at high altitudes lowers ...

you can probably return to that altitude without problems as long as you are properly acclimatized. The concentration of oxygen at sea level is about 21% and the barometric pressure averages 760 mmHg.

Staying at high altitudes for extended periods may also cause forms of altitude sickness. At sea level, the oxygen concentration in the air is approximately 21%, and air pressure averages 760 ...

Adventure staff writer Julia Clarke reveals what she’s doing to prepare for oxygen deprivation during a Himalayan trek ...

“As we age, especially at altitude, we lose that blood oxygen level,” Formato said. “So for folks who maybe never really had altitude issues, those might start to get them in their 40s or 50s.

Compared to those of us who live at sea level, the 2 million people worldwide who live above 4,500 meters (or 14,764 feet) of elevation ... low levels of oxygen, we found that different organs ...