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 ...

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 ...

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 ...

Researchers in the U.S. have found that exposure to low oxygen levels — known as hypoxia — early in life can cause pulmonary hypertension (PH) by permanently altering lung blood vessel development.

Iron is an essential nutrient, necessary for maintaining the health of the brain, immune system, muscles, skin, hair, and nails. Low iron levels, or iron deficiency, can cause various symptoms and ...

Your lungs start burning after 30 seconds underwater. Most people tap out before hitting two minutes. Yet Croatian freediver Vitomir Maričić just held his breath for 29 minutes and 3 seconds on June ...