Chinese Association of Idaho State University (CAISU)
Popular e-cigarette products contaminated with bacterial and fungal toxins
Makers of Electronic Cigarette claim that their products are safe, but a study published Wednesday shows that dozens of popular e-cigarette products are contaminated with bacterial and fungal toxins that cause lung disease.
The impurities found in the e-cigarettes — which are associated with asthma and chronic obstructive lung disease — were found in nearly a quarter of single-use e-cigarette cartridges and in over three quarters of e-liquids, the team at the Harvard School of Public Health found.Finding these toxins in e-cigarette products adds to the growing concerns that we have about the safety of e-cigarettes,” said Dr. David Christiani, study author and professor of environmental genetics at the Harvard T.H. Chan School of Public in Boston.
The researchers examined 75 popular e-cigarette products — 37 single-use cartridges and 38 e-liquids from 10 top selling U.S. brands. The products were classified into four different flavor categories: tobacco, menthol, fruit, and other; and screened for the presence of endotoxin and glucan, toxic inflammatory substances that damage the lungs.
They found that 17 of 75 products, 23%, contained traces of endotoxin, a potent inflammatory molecule found in bacteria, and 61 of 75 products, 81%, contained traces of glucan, a toxic substance found in the cell walls of most fungi. Exposure to these microbial toxins has been associated with a myriad of health problems, including asthma, reduced lung function, and inflammation.
The study also found that endotoxin concentrations were higher in fruit-flavored products, indicating that raw materials used in the production of flavors might be a source of the contamination.
The researchers noted that they did not know where the impurities came from and that the contamination of the products could have occurred at any point during or after the production of the ingredients. They hypothesized that cotton wicks used in Electronic Cigarette Wholesale cartridges could be one potential source of contamination, as both endotoxin and glucan are known contaminants of cotton fibers.
The authors noted that there was no scientific evidence to conclude that the current observed levels of endotoxin and glucan in the e-cigarette products were raising health concerns.u2022eney7485yyWEEEEDD