The effects of sleep apnoea are not confined only to the heart and has far-reaching consequences on mental health.

In breast cancer, a biopsy is the only diagnostic procedure that can determine if a suspicious lump or area is cancerous. However, in the U.S., between 75% and 80% of breast biopsies are benign.

The discovery fundamentally changes the understanding of a structure in the avian eye that has been misinterpreted for centuries.

Neural tissue normally dies quickly without oxygen. Yet bird retinas—among the most energy-demanding tissues in the animal ...

Fingertip monitors known as pulse oximeters that can be used at home to detect low blood oxygen levels (hypoxaemia) give ...

"Although absolute differences in readings were small, they can result in substantially higher rates of false negatives and ...

Fingertip monitors known as pulse oximeters that can be used at home to detect low blood oxygen levels (hypoxemia) give ...

These underground rodents are the first mammals found to actively choose air with lower-than-normal oxygen levels. Their ...

Long Island Sound experienced this year the lowest levels of hypoxia, or low oxygen, since monitoring of water quality began nearly four decades ago, the Long Island Sound Partnership announced.

To take a pulse oximetry reading, turn on the device, place it on your fingertip, sit still, and wait for a stable reading. Normal oxygen saturation levels range from 95% to 100%; levels below 92% may ...