Originally published February 9 2006
Study of Brisbane teens finds siblings wield the most influence when it comes to teenage smoking and drinking
by Mike Adams, the Health Ranger, NaturalNews Editor
University of Washington Sociologist Dr. Abby Fagan discusses a collaborative study carried out with the University of Queensland in which researchers determined that siblings are the most powerful role models in terms of their influence on the drinking and smoking habits of brothers and sisters.
Brothers and sisters are more powerful role models than friends or parents when it comes to teenage drinking and smoking, research has shown.
Researchers from The University of Queensland and University of Washington have proved that tobacco and alcohol use by older siblings increases the odds of similar behaviour from younger siblings by three to five times.
University of Washington Sociologist Dr Abby Fagan studied the contributions and influence of parents, siblings and peers on teen drug use.
Dr Fagan used data from 1370 Brisbane teenagers, who've been part of one of the world's longest running health studies -- the Mater-University of Queensland Study of Pregnancy.
The teenagers were interviewed between 1995 and 1997 at 14 years old and were asked about how often they drank and smoked and also about their family relationships.
On average, 13 percent of younger siblings reported smoking and 36 percent reported drinking, but rates increased when older siblings also reported substance use.
"The results underscore the need to include siblings, or at least address issues relating to sibling relationships and influences, in prevention efforts," Dr Fagan wrote in her study, published in the latest American Journal of Drug Issues.
"If siblings are more powerful role models than parents, however, sibling and their potential influences on each other should be a primary focus of intervention."
Maternal depression also had a significant effect on adolescent substance use.
Dr Fagan's paper was co-written with UQ's Mater Study founder, Professor Jake Najman.
The Mater Study was started in 1981 as a health and social study of 7223 pregnant women.
Dr Fagan is a former UQ researcher who recently finished a two-year fellowship with UQ's School of Social Science.
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