Electronic cigarettes, also known as e-cigarettes or vape pens, are battery-operated devices that heat a liquid solution containing nicotine or flavorings to create an aerosol that is inhaled by the user. These devices were originally marketed as a safer alternative to traditional cigarettes, as they do not produce the harmful chemicals and tar associated with burning tobacco. Research on electronic cigarettes focuses on a variety of areas, including their effectiveness as a smoking cessation tool, their potential health effects, and their appeal to youth. Some studies suggest that e-cigarettes may be an effective tool for helping smokers quit traditional cigarettes, while others raise concerns about the potential long-term health effects of inhaling aerosolized chemicals. Additionally, there is growing concern about the rise in e-cigarette use among young people and the potential for nicotine addiction and other health risks associated with their use. Overall, research on electronic cigarettes is still ongoing, and more studies are needed to fully understand the impact of these devices on public health.