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 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.

The Fitbit Charge 6, the latest addition to Fitbit's lineup of fitness trackers, has introduced a significant advancement in health monitoring with its built-in blood oxygen saturation (SpO2) feature.

For millions of Apple Watch Series 9, Series 10 and Ultra 2 users who didn’t have the blood oxygen monitoring (SpO2) feature on their smartwatches, last week’s software updates offered a key ...

Megan Cerullo is a New York-based reporter for CBS MoneyWatch covering small business, workplace, health care, consumer spending and personal finance topics. She regularly appears on CBS News 24/7 to ...

Sleep apnea can cause low blood oxygen during sleep. Low oxygen levels from sleep apnea can lead to health issues like fatigue and shortness of breath. If blood oxygen levels drop below 92%, medical ...

A further drop in SpO2 below this threshold is defined as hypobaric hypoxia - or low blood oxygen level at higher altitude. Alcohol relaxes blood vessel walls, increasing the heart rate during sleep, ...