Wearables now flag everything from irregular heartbeats to dips in blood oxygen, but the data is only as useful as a person's ...

Medically reviewed by Daniel Combs, MD Key Takeaways Getting less than six hours of sleep a night can increase your risk of ...

Gene editing has delivered remarkable results against sickle cell disease. Now researchers are working to make these ...

Potatoes are one of the most widely consumed food crops in the world. While potatoes are nutrient-dense vegetables, eating large quantities or certain types may raise your blood sugar. Potatoes have ...

A Tibetan Plateau study suggests the brain shifts its activity patterns as the body adjusts to low oxygen at high altitude.

Researchers say even "low-normal" hemoglobin levels during pregnancy may increase the risk of complications for both mothers ...

When most people think about key health metrics, blood circulation may not be at the top of the list. But according to medical experts, good blood flow is incredibly important for health. Below, ...

Martinez had been living with long COVID for 18 months when he was referred to emergency medicine specialist Craig Lindsey’s ...

Hemoglobin is a protein in red blood cells. It carries oxygen around your body, delivering it to tissues. Hemoglobin also carries carbon dioxide to the lungs so you can breathe it out. Iron is a part ...

Zimlich is a critical care nurse who has been writing about health care and clinical developments for over 10 years. Normal blood oxygen saturation levels are 95% to 100%. Most people should have a ...

When an optometrist shines a bright light into your eyes, a vast, branching tree sprouts in your field of vision. This is the shadow of blood vessels. Though we normally can’t perceive them, these ...

Feeling constantly tired, mentally foggy or just not quite at your best is often brushed off as stress, ageing or lack of sleep. But what if the issue runs deeper – right down to how much oxygen your ...