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

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

A nasal cannula is a medical device that provides supplemental oxygen therapy to people who have lower oxygen levels. There are two types of nasal cannulas: low flow and high flow. The device has two ...

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 ...

Oxygen therapy can help treat cluster headaches. However, current research does not support its use for migraine and other headache types. Oxygen therapy involves breathing in air that contains 100% ...

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 ...

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

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