e-cigarette

Four months after U.S. regulators tried to block imports of Elf Bar, the top-selling Chinese disposable e-cigarette.

Both cigarette smoking and e-cigarette vaping are known to promote endothelial dysfunction, which is the inability of big blood arteries to open sufficiently to give enough blood to the heart and other tissues.

Nearly 2,300 adolescents and young adults became new tobacco smokers in the US.