People with obstructive sleep apnea (OSA) typically have low oxygen levels when they sleep because of gaps in their breathing. Blood oxygen during sleep is considered low if levels are below 95%.

Participants were randomly assigned to receive high oxygen (hyperoxia) or a lower amount of oxygen intended to maintain normal blood oxygen levels (normoxia).

Participants were randomly assigned to receive high oxygen (hyperoxia) or a lower amount of oxygen intended to maintain normal blood oxygen levels (normoxia).

There are many possible causes of low blood pressure, some acute like dehydration or blood loss and others chronic, like ...

Erythropoietin, a treatment for newborns with critically low levels of oxygen or blood supply to the brain at birth, does not prevent death or disability, according to a new multinational study ...

A low-oxygen environment — similar to the thin air found at Mount Everest base camp — can protect the brain and restore ...

Maryland's Chesapeake Bay saw historically low oxygen levels in June, after heavy rain in May, according to the state Department of Natural Resources (DNR).

The sea mammals may actually be able to sense the amount of oxygen in their blood—something we humans can't do. A new study suggests gray seals (Halichoerus grypus) can sense the level of oxygen ...