New research also shows that e-cigarette users may have an increased risk of prediabetes and lung diseases, such as asthma and chronic obstructive pulmonary disease (COPD)
The short answer is that some do, but not all of them
For Stanton Glantz, PhD, a professor of medicine at the University of California San Francisco who has studied electronic cigarettes, one of the biggest worries about the devices is something called dual use. The term means that while some electronic cigarettes market themselves as safer alternatives to cigarettes, many people dont fully replace tobacco cigarettes with their electronic counterparts and instead just combine the use of both
Tobacco leaves generally result in a smoother, more consistent smoking experience than cannabis alone, as tobacco burns more evenly than dried cannabis
Xu F, Jin L, Qin Z, et al