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%.

A dangerously low oxygen level—usually below 92%—can cause shortness of breath, confusion, chest pain, or fainting. It’s often triggered by lung or heart conditions like COPD, asthma, or heart ...

First, pause and take a deep breath. When we breathe in, our lungs fill with oxygen, which is distributed to our red blood cells for transportation throughout our bodies. Our bodies need a lot of ...

About half of American adults have high blood pressure, but low blood pressure may also be cause for concern, according to the Centers for Disease Control and Prevention. Shaline Rao, MD, a ...

Red blood cells transport oxygen throughout your body, including to vital organs and tissues. They also help your body get rid of carbon dioxide. Too little or too many red blood cells may be ...

A study in rural Malawi underscores the need for better clinical management of severely ill children with very low blood sugar or blood oxygen levels. The study by researchers at Karolinska Institutet ...

Blood oxygen monitors said that hospitalized Asian, Black, and Hispanic COVID-19 patients had higher blood oxygen levels than they actually did, according to a new study. Oxygen levels are an ...