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Medicineworld.org: Second-hand smoke may trigger nicotine dependence

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Second-hand smoke may trigger nicotine dependence




Montreal, September 29, 2008 Parents who smoke cigarettes around their kids in cars and homes beware second-hand smoke may trigger symptoms of nicotine dependence in children. The findings appear in the September edition of the journal Addictive Behaviors in a joint study from nine Canadian institutions.

"Increased exposure to second-hand smoke, both in cars and homes, was linked to an increased likelihood of children reporting nicotine dependence symptoms, even though these children had never smoked," says Dr. Jennifer O'Loughlin, senior author of the study, a professor at the Universit de Montral's Department of Social and Preventive Medicine and a researcher at the Centre Hospitalier de l'Universit de Montral.



Second-hand smoke may trigger nicotine dependence

"These findings support the need for public health interventions that promote non-smoking in the presence of children, and uphold policies to restrict smoking in vehicles when children are present," adds Dr. O'Loughlin, who collaborated with scientists from the Universit de Sherbrooke, the Universit de Moncton, the University of British Columbia, McGill University, Concordia University and the Institut national de sant publique du Qubec.

Study participants were recruited from 29 Quebec schools as part of AdoQuest, a cohort investigation that measures tobacco use and other health-compromising behaviours. Some 1,800 children aged 10 to 12 years old, from all socioeconomic levels, were asked to complete questionnaires on their health and behaviours. Scientists also asked questions about symptoms of nicotine dependence and exposure to second-hand smoke.

"As per conventional understanding, a person who does not smoke cannot experience nicotine dependence," says Mathieu Blanger, the study's lead author and the new research director of the Centre de Formation Mdicale du Nouveau-Brunswick of the Universit de Moncton and Universit de Sherbrooke. "Our study observed that 5 percent of children who had never smoked a cigarette, but who were exposed to secondhand smoke in cars or their homes, reported symptoms of nicotine dependence".

Dr. O'Loughlin added that this inter-university investigation builds on prior findings: "Exposure to second-hand smoke among non-smokers may cause symptoms that seem to reflect several nicotine withdrawal symptoms: depressed mood, trouble sleeping, irritability, anxiety, restlessness, trouble concentrating and increased appetite".


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Did you know?
Montreal, September 29, 2008 Parents who smoke cigarettes around their kids in cars and homes beware second-hand smoke may trigger symptoms of nicotine dependence in children. The findings appear in the September edition of the journal Addictive Behaviors in a joint study from nine Canadian institutions.

Medicineworld.org: Second-hand smoke may trigger nicotine dependence

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