A team of scientists from the Harvard School of Public Health. T.H. Chana discovered bacterial and fungal toxins in 75 popular e-cigarettes in the United States.
In particular, 27% of them contain traces of endotoxin found in gram-negative bacteria that cause purulent infections, and 81% contain traces of glucan, which is contained in the cell walls of most harmful fungi. Contact with them is dangerous to human health and is the cause of asthma or lung disease.
The overall picture is exacerbated by the rise in the number of e-smokers among middle and high school students. So, if in 2011 there were 220, 000 of them in the United States, then after 6 years - more than 3 million people. Researchers have documented that chemicals that cause severe respiratory illness are among the ingredients in popular e-cigarette flavors.
An analysis by the Harvard team found that the cartridges contained 3.2 times the glucan content of liquid flavors. Moreover, there was more of it in flavors with tobacco and menthol than in fruit flavors.
According to the results of the study, scientists formulated a hypothesis regarding the source of pollution. In their opinion, it could be cotton wicks used in e-cigarette cartridges.