Vaping as smoking cessation methods: Is it a solution or a new problem?

Tobacco smoking has been responsible for 1 million deaths worldwide and predicted would kill 1 billion people in this century. Electronic cigarettes (e-cigarettes) or vaping become more popular in recent years and used by many tobacco smokers as alternative method to smoking cessations. Surprisingly, the new technology made this device more attractive for most teenager and young adults, who had never smoke. Many research has been conducted to answer the pro(s) and con(s) about the benefit and harm of vaping. E-cigarettes caused many health effects, such as cardiovascular diseases, pulmonary diseases, and psychological behavior effects. The in vivo and in vitro studies found that reactive oxygen species (ROS) play an important role for the development of diseases. For conclusions, more researches are still needed to found the effectiveness of e-cigarette as a smoking cessation therapy, including short term and long term health risks.