THURSDAY, April 7 (HealthDay News) -- The link between smoking
and asthma may be even stronger than previously suspected, a new
Researchers analyzed data from a large, epidemiological survey
of American adults (the National Comorbidity Survey-Replication)
and found that people who were diagnosed with asthma were 1.26
times more likely to have been a smoker and about twice as likely
to have been nicotine dependent at some point in their lives,
compared to those without asthma.
The link between asthma and smoking was even stronger among
adults who said they'd been nicotine dependent in the previous 12
"Individuals with asthma were nearly three times as likely as those without asthma to have reported nicotine dependence in the past 12 months after controlling for demographic and drug abuse/dependence variables," Alison McLeish, an assistant professor of psychology at the University of Cincinnati, and her colleagues wrote in the study.
About half of the smokers with asthma said they started smoking
before they were diagnosed with asthma. These adults were diagnosed
with asthma at a much later age than those who began smoking after
they were diagnosed with asthma.
The proportion of people who had been nicotine dependent at some
point in their lives was similar among those who started smoking
before (29.3 percent) or after (25.7) they were diagnosed with
The study appears online in the
Journal of Health Psychology.
The U.S. National Heart, Lung, and Blood Institute has more