Pulse oximeters use light to measure how much oxygen is in a person’s blood. For most people, a normal pulse oximeter reading is between 95% and 100%, researchers said in background notes. Readings ...

Reduced blood flow to the brain is thought to be a key factor in many forms of dementia, including Alzheimer's, and ...

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

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

A specific region in the brainstem causes high blood pressure. By targeting oxygen sensors in the neck, they can lower it ...

Netmums’ Louisa Sherlock’s baby was hospitalised with RSV when he was 5 weeks old. Here she explains why the vaccine in ...

The study explained that even though the Atlantic forest had a diversity of animal and bird species to feed on, over a third ...

Numerous studies have shown COVID infection ups the risk of heart problems, including heart attacks, strokes, damage to the ...

When you’re short on sleep and your focus suddenly drifts, your brain may be briefly slipping into cleanup mode. Scientists ...

Doctors warn that cold waves can sharply increase the risk of brain strokes, especially among people with high blood pressure ...

Courtney Coco was found dead in 2004 nearly 200 miles from her Louisiana home, but it would years to unravel the complicated ...