China: A recent study published in the Journal of the American Heart Association has unveiled a compelling association ...

People with obstructive sleep apnea (OSA) typically have low oxygen levels when they sleep because of gaps in their breathing. Blood oxygen during sleep is considered low if levels are below 95%.

Columnist Caroline Gainer has been sleeping a lot more than usual lately, so she investigates whether that's normal for ...

In a recent study published in Thorax, researchers explored how alcohol consumption and exposure to hypobaric hypoxia interact to affect heart rate, blood oxygen saturation (SpO 2), and sleep.