-- Robert Preidt
WEDNESDAY, Aug. 21 (HealthDay News) -- Alcoholism and certain
types of eating disorders share common genetic risk factors,
according to a new study.
Researchers looked at nearly 6,000 adult fraternal and identical
twins in Australia. Of those, nearly 25 percent of men and 6
percent of women were alcoholics, nearly 11 percent of men and 13
percent of women reported binge eating, and about 14 percent of
women reported purging tactics such as self-induced vomiting or
Genes appeared to account for 38 percent to 53 percent of the
risk of developing these conditions, and some of the same genetic
risk factors that make people susceptible to alcoholism also make
them vulnerable to binge eating or purging, according to the study
in the September issue of the
Journal of Studies on Alcohol and Drugs.
The findings support "the idea that there are common genetic
factors contributing to alcohol dependence and these eating
disorder symptoms," lead researcher Melissa Munn-Chernoff, of
Washington University School of Medicine in St. Louis, said in a
journal news release.
Learning more about genetic and other risk factors may lead to
better treatments for these disorders, she noted.
Previous studies found that women who binge eat or purge have
higher-than-average rates of alcohol use disorders, but it wasn't
clear if the disorders had genetic risk factors in common. While
this new study indicates that this is the case, it's not clear
exactly which genes are involved.
"We need to be aware that these problems can occur together, in both men and women," Munn-Chernoff said.
She suggested that when doctors see patients with a drinking
problem, they may want to ask about binge eating and purging
symptoms, or vice versa. Currently, that is something that is not
The U.S. National Institute of Mental Health has more about
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