Vaping vs cigarette health effects
Pro Research Analysisby 
Searched over 200M research papers
Cardiovascular Health Effects: Vaping vs Cigarettes
Both vaping and cigarette smoking are linked to significant cardiovascular health risks. Cigarette smoking is a well-established cause of cardiovascular disease, including heart failure, atrial fibrillation, and venous thromboembolism. Vaping, while often marketed as a safer alternative, also causes oxidative stress, inflammation, and endothelial dysfunction—key factors in cardiovascular disease. The overlap in toxic compounds between cigarette smoke and e-cigarette vapor means both can impair vascular function to a similar extent, although the specific toxins differ somewhat between the two products. Importantly, both can increase blood pressure and heart rate, and chronic use of either can lead to arterial stiffness and vascular changes that raise the risk of heart disease 1235.
Pulmonary and Respiratory Health Effects: Comparing Vaping and Smoking
Cigarette smoking is a major cause of chronic lung diseases, but vaping is also associated with significant respiratory risks. Both vapers and smokers show reduced lung function compared to non-users, including lower forced expiratory volume and peak expiratory flow. Vaping can cause airway reactivity, obstruction, inflammation, and even emphysema, similar to the effects seen in smokers. Acute lung injuries, such as EVALI (e-cigarette or vaping use-associated lung injury), have been reported among vapers, sometimes leading to hospitalization and even death. Animal studies confirm that vaping impairs lung ventilation and structure, and human studies show increased rates of coughing and asthma among vapers 2456+3 MORE.
Chemical Exposure and Toxicity: Vaping vs Cigarettes
While e-cigarette vapor contains fewer types of toxins than cigarette smoke, it still exposes users to harmful chemicals. Cigarette smoke contains a complex mix of particulate matter, reactive gases, and carcinogens, while e-cigarette vapor is rich in reactive aldehydes like formaldehyde and acrolein. Both products can cause cellular damage and inflammation in the lungs and cardiovascular system. The long-term effects of inhaling these chemicals from vaping are not yet fully understood, but early evidence suggests they are not harmless and can cause changes similar to those seen with cigarette smoke 1356+1 MORE.
Addiction and Youth Risks: Vaping as a Gateway
Vaping is particularly popular among youth and young adults, partly due to appealing flavors and perceptions of reduced harm. However, evidence shows that vaping increases the risk of nicotine addiction and acts as a gateway to cigarette smoking. Young people who vape are over three times more likely to start smoking cigarettes later. There is also evidence linking vaping to increased use of marijuana, alcohol, and higher rates of mental health issues among adolescents 210.
Smoking Cessation: Is Vaping a Safer Alternative?
Some clinical trials suggest that vaping can help smokers quit and may be associated with fewer adverse events than continued cigarette smoking. However, the long-term health effects of vaping remain unknown, and there is concern that vaping may not actually reduce nicotine addiction or overall harm, especially given the risk of dual use (vaping and smoking together) and increased uptake among youth 137.
Conclusion
Both vaping and cigarette smoking pose significant health risks, particularly to the cardiovascular and respiratory systems. While vaping may expose users to fewer types of toxins than cigarettes, it is not without harm and can cause similar physiological changes and health problems. The perception that vaping is a safe alternative is not supported by current evidence, especially given its role in promoting nicotine addiction and acting as a gateway to cigarette use among youth. More research is needed to fully understand the long-term health effects of vaping, but current data suggest that neither option is safe.
Sources and full results
Most relevant research papers on this topic