Some illicit tobacco products have even higher levels due to excessive fertilizer use
There are several harmful ingredients including the following ingredients and impacts: E-Cigarettes Contain Nicotine with Harmful Impacts While many people believe that there is no nicotine in their e-liquid, 99% of e-cigarette product sales have nicotine (Marynak et al., 2017)
doi: 10.1016/j.ypmed.2008.04.009 Hyland, A., Bauer, J., Li, Q., Abrams, S., Higbee, C., Peppone, L., & Cummings, K
The FDA estimates reducing nicotine levels could prevent more than 33 million from becoming regular smokers and about 5 million additional smokers would quit within a year of lowering nicotine levels and 134 million years of life would be gained