For example, a study using data from ITC-Canada and ITC-Mexico assessed smokers' reactions to cigarette health warnings (Ref
Furthermore, the patterns of oncogene activation in several rodent model systems appear to be carcinogen-specific, are consistent with known or expected DNA adduct formation, and in some cases are similar to patterns of oncogene activation documented in human neoplasms
In addition, the majority of vape products contain nicotine, the highly addictive substance also found in tobacco cigarettes that is known to be harmful to health
This condition can further complicate attempts to conceive
However, there are also potential negative impacts, for example if these products are used by people who would not have become smokers and, worse, if the gateway hypothesis, i.e