Whether e-cigarettes cause cancer is not conclusive, but long-term smoking of e-cigarettes can have many harmful effects on the body, including respiratory and circulatory damage. E-cigarettes may be less harmful than traditional cigarettes, but the effects of long-term use of e-cigarettes are not clear. There is no clinical data on the relationship between e-cigarettes and cancer. In addition, they contain more chemicals, such as vitamin E acetate, and other chemicals and so on. When inhaled into the body, they may cause various damages to the body. If the damage persists for a long time, it may make the risk of lung cancer higher, and the specific harm needs to be supported by clinical data. However, regardless of whether it can cause cancer, it is recommended to smoke less e-cigarettes to avoid affecting your health.