The Hidden Dangers: E Cigarettes, Heated Tobacco, and Their Impact on Oxidative Stress and AtherosclerosisA Systematic Review and Narrative Synthesis of the Evidence Smoking affects the heart long before symptoms appear. Each cigarette delivers chemicals that enter the bloodstream within seconds, reaching the heart and blood vessels almost immediately. These substances damage the inner lining After coronary angioplasty, quitting smoking with the help of e cigarettes reduces the risk of complications Prevention Observatory of the Montreal Heart Institute Cardiopulmonary Impact of Electronic Cigarettes and Vaping Products: A Scientific Statement From the American Heart Association Circulation