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We also assess the brain's timing, coordination, and rhythm down to the millisecond

Journal of Analytical Toxicology

Pleasurable Alternative : Provides a discreet and enjoyable option to traditional smoking

The research, which reopens the debate on the dangers and benefits of e-cigarettes, suggests the vapour produced by the devices can compromise the immune system in the lungs, leaving them more vulnerable to infection by harmful bacteria and viruses

Dr Ludmil Alexandrov, first author from Los Alamos National Laboratory, said: Before now, we had a large body of epidemiological evidence linking smoking with cancer, but now we can actually observe and quantify the molecular changes in the DNA due to cigarette smoking

"We've found that the conversion rate from first-time smoker to daily smoker is surprisingly high, which helps confirm the importance of preventing cigarette experimentation in the first place," he said