According to the National Institutes of Health, recent studies in both humans and animals suggest that long-term vaping may have a significant negative effect on blood vessels and increase the risk of cardiovascular disease.
However, due to the relatively recent introduction of vaping products, there is still not enough research to fully understand the long-term effects of vaping.
Some researchers have suggested that carcinogenic products, such as tobacco, may take decades to cause cancer in humans and that frequent use of e-cigarettes may cause cumulative damage to cells.