Oxygen is critical to life. When levels of oxygen change, it can have immediate and lasting impacts on a person's health.

Scientists have long known that people living at high altitudes, where oxygen levels are low, have lower rates of diabetes ...

Makers of medical devices that quickly measure oxygen levels in the blood would have to gather extra data to show that their products work for patients of color, under a new federal proposal released ...

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