A dangerously low oxygen level—usually below 92%—can cause shortness of breath, confusion, chest pain, or fainting. It’s often triggered by lung or heart conditions like COPD, asthma, or heart ...

Supplemental oxygen is among the most widely prescribed therapies in the world, with an estimated 13 to 20 million patients worldwide requiring oxygen delivery by mechanical ventilation each year.

Isha Jain, PhD, senior author of the new study, Gladstone Assistant Investigator Understanding oxygen's effects Most prior research on oxygen levels has examined the molecular effects of too little ...