WASHINGTON — Of the roughly 15 million Americans who tried to quit smoking in 2022, 5 in 6 failed. It’s a jarring statistic — and an indictment of the treatment options for an addiction that kills 480 ...

A 32.5-year follow-up of a U.S. smoking cessation trial found sustained protection against death from non–lung cancer respiratory disease, underscoring long-term benefits of quitting smoking.

The vascular endothelium represents a monolayer of endothelial cells that envelops the innermost surfaces of arteries, veins, cardiac lumina, and lymphatic vessels. These endothelial cells are ...