Vital signs, those fluorescent green numbers that beep, ding, and dash across black screens on the monitors in hospital rooms, have become a new source of angst during the coronavirus pandemic. One of ...

A dangerously low oxygen level—usually below 92%—can cause shortness of breath, confusion, chest pain, or fainting. It’s ...

Share on Pinterest Lower oxygen levels may be beneficial to the lungs and overall health. Yaroslav Danylchenko/Stocksy Researchers are reporting that an environment with lower oxygen levels helped ...