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Cigarette smoke, alcohol damage hearts worse as combo
Date:11/21/2007

BIRMINGHAM, Ala. Tobacco smoke-filled air is bad for cardiovascular health, and drinking alcohol at the same time only makes it worse, according to researchers at the University of Alabama at Birmingham (UAB).

Testing the theory that moderate alcohol consumption provides some heart-protection benefits, the UAB team said it wanted to take the idea further and look at the effects of smoking and breathing second-hand smoke along with drinking.

They reported that mice exposed to smoky air in a laboratory enclosure and fed a liquid diet containing ethanol, the intoxicating ingredient in alcohol, had a 4.7-fold increase in artery lesions. That compares to mice who breathed filtered air and ate a normal solid diet.

Artery lesions are a common problem in heavy smokers and a key sign of advancing cardiovascular disease. The results are published in the journal Free Radical Biology & Medicine.

The researchers reported mice solely exposed to the smoky air had a 2.3-fold increase in artery lesions when compared to mice who breathed filtered air. Mice solely fed a liquid diet containing ethanol had a 3.5-fold increase in artery lesions when compared to mice fed a normal diet.

The study points to a greater need to understand the negative biological impact of single or multiple risky behaviors, and the compounding effect of environmental hazards such as second-hand smoke, said Scott Ballinger, Ph.D., an associate professor in the UAB Department of Pathology and lead author on the study.

Our study shows that exposure to cigarette smoke when combined with alcohol consumption caused the greatest degree of cardiovascular disease development compared to either action or exposure alone, Ballinger said.

Because moderate alcohol consumption is commonly thought to be cardioprotective, these findings are important for smokers and non-smokers alike in terms of what you should and should not do to protect their healt
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Contact: Troy Goodman
tdgoodman@uab.edu
205-934-8938
University of Alabama at Birmingham
Source:Eurekalert

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