yayin yashan bkli chadash:
at least the ecigarettes don’t cause u cancer
debatable. a new study just came out that vaping in fact does cause cancer.
from New England Journal of Medicine
by R. Paul Jensen, B.S.
Wentai Luo, Ph.D.
James F. Pankow, Ph.D.
Robert M. Strongin, Ph.D.
David H. Peyton, Ph.D.
in english
Formaldehyde, a known human carcinogen found in cigarette smoke, also dwells in the vaporized liquid of popular electronic or e-cigarettes, researchers said Wednesday.
E-cigarette sales are booming in the United States and many hoped so- called “vaping” would replace tobacco smoking and be a panacea for the nearly 160,000 lung cancer deaths associated with conventional cigarettes.
But according to an analysis published Wednesday in the New England Journal of Medicine, the exposure to formaldehyde from e-cigarettes, based on similar chronic use as tobacco, could be five to 15 times higher than from smoking cigarettes.
“It’s way too early now from an epidemiological point of view to say how bad they are,” said co-author James F. Pankow, professor of chemistry and engineering at Portland State University in Oregon. “But the bottom line is, there are toxins and some are more than in regular cigarettes. And if you are vaping, you probably shouldn’t be using it at a high-voltage setting.”
Pankow and his colleagues analyzed aerosolized e-liquid in “tank system” e-cigarettes to detect formaldehyde-releasing agents in “hidden” form at various voltages.
They found that vaping 3 milligrams of e-cigarette liquid at a high voltage can generate 14 milligrams of loosely affiliated or “hidden” formaldehyde. Researchers estimated a tobacco smoker would get .15 milligrams of formaldehyde per cigarette or 3 milligrams in a 20-pack.
Pankow said that those numbers “may be conservative.”
There are more than 8,000 chemicals in tobacco smoke, so it’s hard to pinpoint whether formaldehyde is the main culprit in cigarette-related cancers.
“A lot of people make the assumption that e-cigarettes are safe and they are perfectly fine after using for a year,” said Pankow. “The hazards of e-cigarettes, if there are any, will be seen 10 to 15 years from now when they start to appear in chronic users.”
E-cigarettes were first invented in China in 2003, but they started appearing in the United States around 2006. A five-pack of flavor cartridges costs about the same as a pack of cigarettes and starter kits can cost between $30 and $100.
A cartridge or tank contains a liquid of propylene glycol, glycerol, or both, as well as nicotine and flavoring. These chemicals are heated to the boiling point with a battery-operated atomizer, creating a smokeless vapor that is inhaled.