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Risk for alcoholism linked to risk for obesity
Date:12/30/2010

two surveys.

"We looked particularly at family history of alcoholism as a marker of risk," Grucza explains. "And we found that in 2001 and 2002, women with that history were 49 percent more likely to be obese than those without a family history of alcoholism. We also noticed a relationship in men, but it was not as striking in men as in women."

Grucza says a possible explanation for obesity in those with a family history of alcoholism is that some individuals may substitute one addiction for another. After seeing a close relative deal with alcohol problems, a person may shy away from drinking, but high-calorie, hyper-palatable foods also can stimulate the reward centers in their brains and give them effects similar to what they might experience from alcohol.

"Ironically, people with alcoholism tend not to be obese," Grucza says. "They tend to be malnourished, or at least under-nourished because many replace their food intake with alcohol. One might think that the excess calories associated with alcohol consumption could, in theory, contribute to obesity, but that's not what we saw in these individuals."

Grucza says other variables, from smoking, to alcohol intake, to demographic factors like age and education levels don't seem to explain the association between alcoholism risk and obesity.

"It really does appear to be a change in the environment," he says. "I would speculate, although I can't really prove this, that a change in the food environment brought this association about. There is a whole slew of literature out there suggesting these hyper-palatable foods appeal to people with addictive tendencies, and I would guess that's what we're seeing in our study."

The results, he says, suggest there should be more cross-talk between alcohol and addiction researchers and those who study obesity. He says there may be some people for whom treating one of those disorders also might aid the other.


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Contact: Jim Dryden
jdryden@wustl.edu
314-286-0110
Washington University School of Medicine
Source:Eurekalert  

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