Learn how oxygen’s early rise could have given complex life the energy boost it needed to evolve.

New noninvasive tools reveal that subtle shifts in brain blood flow and oxygen use may mirror key markers of Alzheimer’s risk ...

Ancient microbes tied to our earliest ancestors could use oxygen, reshaping ideas about how complex life began on Earth.

Life on Earth may have learned to breathe oxygen long before oxygen filled the skies. MIT researchers traced a key ...

home oxygen delivery_Getty_157329625 Use of home oxygen is associated with reduced physical function in patients with either COPD or idiopathic pulmonary fibrosis. NEW ORLEANS – Use of home oxygen (O2 ...

Nighttime drops in ocean oxygen raise energy use in small reef fish. Repeated stress could affect reef health as oceans warm.

Oxygen fills the air today, but for most of Earth’s early history it barely existed. Scientists say the atmosphere did not hold steady oxygen until about 2.33 billion years ago, during the Great ...

In past Medscape posts, I've railed against the cost of inappropriate prescriptions for oxygen. A recent review recommended against prescribing oxygen for patients with isolated exertional or ...

The blood oxygen sensor featured in Apple Watch Series 6 and 7 is “not intended for medical use,” Apple says. That seems odd, considering that low blood oxygen is a serious medical condition. If the ...