According to a new study out of Hong Kong, China, the chemicals most commonly included in e-cigarettes contain more cancer-causing substances than polluted air. The researchers also discovered that a type of flame retardant used in the devices themselves can affect the body’s reproductive system, which could also lead to cancer.
The study analyzed thirteen different electronic cigarettes that were sold on the Chinese market, and found that the level of polycyclic aromatic hydrocarbons (PAHs), which is a by-product of burning petroleum, ranged from 2.9 to 504.5 nanograms per milliliter.
According to Dr. Chung Shan-shan, an assistant professor in the Baptist University’s Biology Department:
“[Level of PAHs] in e-cigarettes is at least one million times more than roadside air in Hong Kong. . . . Even though we don’t know the exact number of e-cigarettes one should take, not to mention that many of the carcinogenic effects are cumulative, I don’t think there is a safe margin. (source)