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.

Blood oxygen readings can be a useful indicator of wellness, but context is important — and so is medical advice from a doctor. By Brian X. Chen The new Apple Watch can be summed up in two words: ...

There are currently plenty of fitness trackers available to monitor your daily activity, however if you are looking for something a little bit more refined and capable of monitoring your blood oxygen ...

When you have low blood oxygen levels, you can experience shortness of breath and confusion. Hypoxemia is a serious health condition that requires urgent medical care. Hypoxemia is when you have low ...

Blood Oxygen is back for affected Apple Watch models. Will be reinstated with the latest iOS and WatchOS updates. Apple redesigned it to resolve an import ban over patent infringement. Get more ...