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Moderate drinking in later years may damage heart

American Heart Association Rapid Access Journal Report

2015-05-26
(Press-News.org) DALLAS, May 26, 2015 -- Drinking two or more alcoholic beverages daily may damage the heart of elderly people, according to research in the American Heart Association journal Circulation: Cardiovascular Imaging. The study correlated weekly alcohol consumption among 4,466 people -- average age 76 -- to the size, structure and motion of various parts of the heart.

Researchers found: The more people drank, the greater the subtle changes to the heart's structure and function. Among men, drinking more than 14 alcoholic beverages weekly (heavy drinking) was linked with enlargement of the wall of the heart's main pumping chamber (left ventricular mass). Among women, moderate drinkers had small reductions in heart function.

"Women appear more susceptible than men to the cardiotoxic effects of alcohol, which might potentially contribute to a higher risk of alcoholic cardiomyopathy, for any given level of alcohol intake," said Scott Solomon, M.D., senior author of the study and professor of medicine at Harvard Medical School and director of noninvasive cardiology at Brigham and Women's in Boston.

Previous research has shown that light to moderate drinking may protect against some cardiovascular disease, while heavy drinking has been linked with a higher risk for cardiomyopathy -- in which the heart muscle becomes larger, thicker, more rigid, or is replaced by scar tissue.

"In spite of potential benefits of low alcohol intake, our findings highlight the possible hazards to cardiac structure and function by increased amounts of alcohol consumption in the elderly, particularly among women. This reinforces the U.S. recommendations stating that those who drink should do so with moderation," said Alexandra Gonçalves, M.D.; Ph.D., lead author of the study and Postdoctoral Research Fellow at Brigham and Women's in Boston.

Moderate drinking is generally defined as two drinks a day (beer, wine or liquor) for men and one drink a day for women. The American Heart Association guidelines and 2010 U.S. Dietary Guidelines recommend limiting alcohol intake to up to one drink a day for women and up to two for men.

INFORMATION:

Co-authors are Pardeep S. Jhund, M.B.Ch.B., Ph.D.; Brian Claggett, Ph.D.; Amil M. Shah, M.D., M.P.H.; Suma Konety, M.D.; Kenneth Butler, Ph.D.; Dalane W. Kitzman, M.D.; Wayne Rosamond, Ph.D., M.S.; and Flavio D. Fuchs, M.D., Ph.D. Author disclosures are on the manuscript. The National Heart, Lung, and Blood Institute funded the study.

Additional Resources: Alcohol and Heart Health Follow AHA/ASA news on Twitter @HeartNews Statements and conclusions of study authors published in American Heart Association scientific journals are solely those of the study authors and do not necessarily reflect the association's policy or position. The association makes no representation or guarantee as to their accuracy or reliability. The association receives funding primarily from individuals; foundations and corporations (including pharmaceutical, device manufacturers and other companies) also make donations and fund specific association programs and events. The association has strict policies to prevent these relationships from influencing the science content. Revenues from pharmaceutical and device corporations are available at http://www.heart.org/corporatefunding.



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[Press-News.org] Moderate drinking in later years may damage heart
American Heart Association Rapid Access Journal Report