Continuing to higher altitudes without proper acclimatization can lead to potentially serious, even life-threatening illnesses. The major cause of altitude illnesses is going too high too fast. Given ...

Medically reviewed by Arno Kroner, DAOM Altitude sickness occurs when air pressure and oxygen levels are reduced at a higher ...

Cruising altitude isn't a fixed number — many factors go into computing this for every flight — but there is a good reason why ... Why Planes Fly at High Altitudes Flying at higher altitudes ...

Medical conditions that deprive the testes of oxygen, such as sleep apnea, may be contributing to the decline in male fertility observed over the past 50 years, a new study suggests.