<p>Genetic Aspect of Smoking</p> <p>American researchers claim: Genes can definitely influence whether someone may become a smoker.</p> <p>1000 participants up to age 38 were involved in the study held by the research group from Duke University. Those with a high-risk genetic profile were more likely to smoke every day as teenagers. And their attempts to quit smoking were attended with great difficulties and stresses.</p> <p> "Genetic risk accelerated the development of smoking behavior," said study leader Dr Daniel Belsky.</p> <p> Alterations in the DNA were more common in the heaviest smokers. These modifications indicate the brain and body's responses to nicotine. <div style="text-align:center"><img src="/img_news/smoking_genetic.jpg" style="border:0;width:617px;height:310px" alt="smoking genetic" /></div>