Vaping: Is it Safer than Smoking?
By Sue Kangas, PA
Vaping has become increasingly popular over the past decade, especially among teens and young adults who often view it as a safer alternative to traditional cigarettes. Growing scientific evidence shows that vaping carries significant health risks and can lead to long‑term harm. Public health organizations, including the Centers for Disease Control and Prevention (CDC) and the National Institutes of Health (NIH), have conducted extensive research demonstrating that e‑cigarettes are far from harmless.
Studies have found that many vaping liquids contain nicotine, a highly addictive substance that affects brain development in adolescents. According to research published by the U.S. Surgeon General, nicotine exposure during adolescence can impair attention, learning, and impulse control. Even products labeled “nicotine‑free” have been shown in FDA investigations to contain measurable levels of nicotine, misleading consumers about their true risks.
Beyond addiction, vaping exposes users to chemicals that can damage the lungs. A landmark study in the New England Journal of Medicine linked vaping to EVALI (e‑cigarette or vaping‑associated lung injury), a severe condition that caused thousands of hospitalizations. Investigators found that vitamin E acetate, a thickening agent found in THC containing products and in some vaping products, was strongly associated with lung damage. Additional studies have identified carcinogens (cancer causing) aerosols that contain formaldehyde, acrolein, nitrosamines, polycyclic aromatic hydrocarbons and toxic metals such as nickel, chromium, cadmium, tin, and lead produced by certain e‑cigarettes, which can contribute to respiratory and cardiovascular problems.
Vaping has also been shown to increase inflammation in the airways. Research from the American Heart Association reports that e‑cigarette users experience elevated oxidative stress (a cellular imbalance that happens when unstable molecules called free radicals or reactive oxygen species build up faster than the body can neutralize them with antioxidants) a condition that can lead to heart disease over time. These findings challenge the perception that vaping is a safe alternative to smoking.
Concerning the secondhand exposure to e-cigarette aerosols, they are not harmless, and current evidence indicates they expose people to substantially lower levels of toxicants than secondhand cigarette smoke, so it is generally considered less harmful, though not equivalent to breathing clean air. The main difference being the e-cigarette aerosol is not combustible, so it lacks tar, carbon monoxide, and the very high concentrations of many carcinogens found in burned tobacco.
Practical takeaway: The weight of evidence does not support treating secondhand aerosol as equivalent to secondhand smoke, but it is also not “just water vapor.” Vaping around others, especially children and in enclosed spaces, should be avoided.
As evidence continues to grow, public health experts urge individuals, especially youth to understand the real risks. Vaping is not harmless, and awareness is essential to protecting long‑term health.