Blood oxygen levels refer to the amount of oxygen circulating in the blood. Normal blood oxygen levels fall between 75 and 100 millimeters of mercury (mm Hg) on arterial blood gas (ABG) test results.

Reducing oxygen levels in critically ill children on mechanical ventilators in intensive care could save tens of young lives each year, finds a new study led by researchers at UCL and Great Ormond ...

A new study suggests that some of the world’s oxygen-deprived oceans could eventually regain higher oxygen levels in the ...

Smartwatches can measure everything from heart rate to sleep quality, but one health metric has become particularly relevant over the past two years: blood oxygen saturation. Two of the world's ...

In iOS 26.4, Apple added an Average Bedtime metric to the Sleep section of the Health app, letting users better monitor how ...

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.

Tiger Iron formed when in the sea dissolved iron reacted with free oxygen produced by the first photosynthetic life forms on Earth. For the first 2 billion years of Earth's history, there was barely ...

(Nanowerk News) People get tattoos to remember an event or a person, to make a statement, or simply as an aesthetic embellishment. But imagine a tattoo that could be functional – telling you how much ...