This report investigates the impact of vaping, smoking, and their relationship with psychological stress. It begins with an introduction highlighting the increasing prevalence of smoking and vaping among young people, linking them to stress relief and the associated health risks like lung cancer, heart disease, and various other diseases. The report explores the consumption of nicotine through vaping and its effects, including increased blood pressure and narrowed blood vessels. It examines the shift from smoking to vaping, driven by perceptions of reduced harm and appealing flavors. The report then delves into why people engage in risky behaviors, including addiction and peer pressure, and examines the theories related to risk perception. The research aims to analyze the knowledge individuals have towards vaping and e-cigarettes and their health impacts, the impact of personality traits on vaping initiation, theories related to risk perception and people behavior towards risk, and the various diseases that can be caused. The report includes a literature review, research methodology, analysis, results, and conclusions with recommendations. The study aims to understand the impact of messages about scientific uncertainty regarding the health effects of vaping on risk perception related to psychological stress.