So why do so many life-forms breathe oxygen? There are probably thousands of kinds of metabolisms, or chemical processes that ...

Early diagnosis of COPD, chronic obstructive pulmonary disease, increases the quality of life of the patient and the efficacy of available treatments.

Levels of lead and other heavy metals spiked in L.A.'s coastal waters after the January fires, raising serious concerns for ...

Sir William Osler was a wise old owl in explaining medical matters. He was a professor of medicine at McGill University in Montreal, John Hopkins University in Baltimore, and finally ...

Carson Meyer — who was Gigi Hadid's doula — shares an exclusive essay with PEOPLE on what it's really like being in a ...

Healthcare providers label patients with diagnoses that often cause anxiety and distress. A better approach is to rename a diagnosis as an imbalance to empower the patient.

Electronic cigarette use may pose lower cardiovascular risks in people living with HIV compared to tobacco cigarette use, new ...

Animals, plants and many other living organisms inhale oxygen to "burn" (oxidize) compounds like sugar into CO2 and water—a ...

Postbiotics, derived from beneficial microbes, improve gut health by enhancing barrier function and immune responses, ...

Breathing through the nose is significantly healthier than mouth breathing. Nose breathing filters, humidifies, and warms the ...