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 ...

People with low blood pressure might have a risk when they're flying. This happens due to various reasons, which includes ...

Abnormal clumps of proteins like α-synuclein, amyloid beta and tau are associated with neurodegenerative conditions like ...

Medical experts caution that exposure to extreme cold without proper clothing can have serious consequences. Inadequate ...

"What is good for the heart is good for the brain," one researcher says.

Ms Draper also allegedly argued with a colleague and didn't follow advice ...

The light-sensitive tissue of birds’ eyes is not supplied with oxygen by blood vessels – instead, it powers itself with a ...

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

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

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.

Bird retinas survive without oxygen by burning sugar scientists solve 300 year mystery that could help treat human strokes.

Higher levels of the enzyme PRDX2 reduced damage to lung blood vessels in chronic thromboembolic pulmonary hypertension in a ...