FEB 01, 2017 02:52 PM PST

More Evidence That E-Cigs Are Not Harmless

WRITTEN BY: Kara Marker

No, electronic cigarettes are not a “healthy” alternative to traditional tobacco smoking, and new research confirms this finding. As a follow-up from the 2016 European guidelines on cardiovascular disease prevention which stated that there should be more research on the long-term effects of e-cigarettes, researchers from the European Society of Cardiology conducted a study comparing e-cigarette users and non-users.

Between 2010 and 2013, the use of e-cigarettes more than doubled among American adults, according to a study from the CDC and Georgia State University. More than 20 million U.S. adults are estimated to have tried them at least once.

"There are studies also showing that people that start with e-cigarettes have a tendency to become persistent tobacco cigarette smokers as well,” explained European Society of Cardiology cardiovascular prevention spokesperson Joep Perk. He strongly suggests that e-cigarettes should not be promoted as an alternative to tobacco smoking.

"At the end of the day the best thing is simply to prevent people ever getting into the vicinity of nicotine," he said.

Perk and his team compared changes in cardiac sympathetic activity, measured by changing adrenaline levels in the heart, and oxidative stress between 23 habitual e-cigarette users and 19 non-users. All of the study participants were at least 21 and more than 45 years old. Researchers found that for the habitual users, meaning e-cigarette use on most days of the year, both cardiac adrenaline levels and oxidative stress were enhanced.

Significantly, the same changes in these two measurements are seen in tobacco cigarette users. "Nicotine stimulates the central nervous system, so it's not at all surprising that people continuously taking nicotine get this sympathetic stimulation," Perk explained. "This then might lead to irregular heartbeat and raised blood pressure, and probably has long-term deleterious effects on the blood vessel walls."

Researchers cannot yet say that negative effects from e-cigarettes, like those observed in the present study, are so bad that they will cause premature death for people that use them. "To prove this you have to put people on e-cigarettes for 10 to 15 years and see how many die early - a study that will not be done for ethical reasons,” Perk explained.

Perk said that while e-cigarettes are used in nicotine replacement therapy, clinicians should exert caution when prescribing them to people as an anti-smoking tools. Other smoking cessation schemes, such as chewing gum or patches, always include the decision to taper off use and eventually stop,” he said. “This is not in general the case with e-cigarettes, which tend to be seen as a replacement and not a weaning off nicotine addiction. In fact they prolong the addiction."

Perk’s study was recently published in the journal JAMA Cardiology.

Source: European Society of Cardiology

About the Author
  • I am a scientific journalist and enthusiast, especially in the realm of biomedicine. I am passionate about conveying the truth in scientific phenomena and subsequently improving health and public awareness. Sometimes scientific research needs a translator to effectively communicate the scientific jargon present in significant findings. I plan to be that translating communicator, and I hope to decrease the spread of misrepresented scientific phenomena! Check out my science blog: ScienceKara.com.
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