People who vape had worrisome changes in cardiovascular function, even as young adults American Heart Association Tobacco smoking and vascular biology and function: evidence from human studies Pflgers Archiv European Journal of Physiology Springer Nature Link Is Vaping Bad for Your Heart? Vaping Side Effects Vaping benefits blood vessel health as much as other nicotine replacements Sheffield Hallam University How to Quit Vaping and Stop Vape Withdrawal Oro House Is smoking or vaping worse for you? It depends who's asking BBC Science Focus Magazine