Smoking Damages DNA Fast

Weve known for a long time that smoking is one of the worst habits we can have, and that it wreaks havoc on our organs and general fitness. But we also thought it took at least a few years for its dangerous effects to take hold.

Well, now that understanding has gone up in smoke. According to a new report published in Chemical Research in Technology, the chemical that causes cancer from smoking actually forms much more quickly than previously thought. The scientists who conducted the study, funded by the National Cancer Institute, say their results make even clearer importance of never starting to smoke and also dash any thoughts that a casual smoker is not doing anything harmful.

In fact, the researchers say their study suggests the damage begins just moments after the first cigarette is smoked -- much faster than you think. The study shows that the negative effects take only between fifteen and thirty minutes to take place. In the study, researchers focused on a carcinogenic substance in cigarettes, known as polycyclic aromatic hydrocarbons, or PAH. The substance is known to affect DNA, and is also linked to cancer.

Professor Stephen Hecht, from the University of Minnesota, reported: "This study is unique because it is the first to investigate human metabolism of PAH specifically delivered by inhalation in cigarette smoke, without interference by other sources of exposure such as air pollution or the diet. And he added, The results should serve as a stark warning to those who are considering starting to smoke cigarettes."

Many smokers know their habit could lead to lung cancer, but think that the possibility is far in the future and that theyll quit before then. This study proves that the initial stage of the damaging process begins not in thirty years, but within thirty minutes of a single cigarette.And the speed with which the PAH began to do itsdeadly work was equal, the researchers said, to injecting the substance directly into the bloodstream.But as frightening as the news may be, experts urge smokers not to hope. Even though the damaging process begins early, it is never too late to quit -- and the sooner the better.Robin Westen is ThirdAges medical reporter. Check out her daily updates. She is the author of Relationship Repair.See what others have to say about this story or leave a comment of your own.
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