Canned oxygen promises to boost your performance at altitude. We asked a medical expert if it lives up to the hype, then put ...

Editors’ Note: On December 17, 2020, the New England Journal of Medicine published a research letter, “Racial Bias in Pulse Oximetry Measurement,” prompted by this essay. Read the medical study here ...

Vitamin B12 is needed in microscopic amounts, but a shortage can have major effects on health and energy. The vitamin was first linked to a lifesaving liver treatment for pernicious anemia nearly 100 ...

Sanja Jelic, MD, is board-certified in sleep medicine, critical care medicine, pulmonary disease, and internal medicine. Hypercapnia happens when you have too much carbon dioxide (CO2) in your blood.

Are you getting enough vitamin B12? Even if you’re taking supplements, a recent study found that the “normal” guidelines may still be leaving you deficient in this key nutrient. A new study from the ...

Some animals can regrow lost body parts. Salamanders and frog tadpoles can rebuild entire limbs after amputation. Mammals cannot. For decades, biologists have tried to understand why. Limb ...

Valerie Cacho, MD, is a board-certified sleep medicine specialist with additional board certifications in internal medicine and integrative medicine. Oxygen therapy is not the first choice to treat ...

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Chronic wounds often spiral out of control because oxygen can’t reach the deepest layers of injured tissue. A new gel developed at UC Riverside delivers a continuous flow of oxygen right where it’s ...

Fingertip Blood Oxygen Monitors Are Less Accurate For People Of Color, Study Finds By Dennis Thompson HealthDay ReporterFRIDAY, Jan. 16, 2026 (HealthDay News) — Most everyone’s seen one in a doctor’s ...

It’s easy to look at exercise as just a way to burn calories, but there’s more to movement than energy expenditure. A fitness routine teaches your body how to work better, making you stronger the ...

Haemoglobin is the iron-rich protein in red blood cells. It carries oxygen from the lungs to different parts of the body and returns carbon dioxide back to the lungs. Haemoglobin (Hb) is what gives ...