When the Japanese Ministry of Health commissioned a research, they found formaldehyde and acetaldehyde carcinogens in the liquid produced by many e-cigarette products, stated a health ministry official.
This discovery comes from a lab study that tested the vapor from e-cigarettes on live methicillin-resistant Staphylococcus aureus (MRSA) and human cells.
According to the official, the formaldehyde carcinogen is much more present in the e-cigarette liquids than in the chemicals used in regular cigarettes.
The researcher Naoki Kunugita said: “In one brand of e-cigarette the team found more than 10 times the level of carcinogens contained in one regular cigarette. Especially when the wire (which vaporizes the liquid) gets overheated, higher amounts of those harmful substances seemed to be produced.”
Japan to investigate e-cigarette safety after formaldehyde findings” Safety debate re-ignited after one brand was found to contain up to 10 times more formaldehyde than conventional cigarettes –theguardian.com