Navigation Links
One Drink May Help Heart, But Two Is Too Many
Date:2/18/2008

Extra glass negates immediate benefits to circulation, Canadian study says

MONDAY, Feb. 18 (HealthDay News) -- Whether it's red wine or another spirit, the heart and blood vessels benefit slightly from one drink, but a second erases the positive effects, say Canadian researchers.

A study, published in the February edition of the American Journal of Physiology, Heart and Circulatory Physiology, also raises more questions about the popular notion that red wine may be more effective against heart disease than other types of alcohol.

"We had anticipated that many of the effects of one ethanol drink would be enhanced by red wine. What was most surprising was how similar the effects were of red wine and ethanol. Any benefits that we found were not specific to red wine," Dr. John Floras, director of cardiology research at the Peter Munk Cardiac Centre at Toronto General Hospital, said in a prepared statement.

Several population studies have shown light or moderate alcohol drinking may lower the risk of death and the development of heart disease. Many studies have also reported specific benefits of red wine.

The "French paradox," in which studies have found lower rates of heart disease, despite high-fat diets, in some European countries where red wine was consumed regularly, has also spurred interest in exploring whether red wine has special protective properties.

Researchers at the Canadian center conducted a real-time study of 13 volunteers who were given either 4 ounces of red wine, 1.5 ounces of ethanol or water at random at three separate sessions over two weeks. The volunteers were healthy, nonsmoking adults who were neither heavy drinkers nor total alcohol abstainers.

The wine, a moderately priced pinot noir, contained a high t-resveratrol content, a polyphenol compound found in plants, including red grapes, that exhibits antioxidant properties. Alcohol or substances in alcohol such as resveratrol may improve blood vessel function and also prevent platelets in the blood from sticking together, thus reducing clot formation and the risk of heart attack or stroke.

After one drink of either red wine or alcohol, blood vessels in the participant were more dilated, reducing the work the heart had to do. However, after two drinks, the heart rate, amount of blood pumped out of the heart, and action of the sympathetic nervous system all increased. The ability of the blood vessels to expand in response to an increase in blood flow also diminished.

Increases in heart rate and sympathetic nerve activity are recognized markers for hypertension, heart failure and sudden death.

Floras cautioned that this study measured the effects of these drinks on one occasion only. The effects of daily wine or alcohol intake may be quite different.

"Our findings point to a slight beneficial effect of one drink -- be it alcohol or red wine -- on the heart and blood vessels, whereas two or more drinks would seem to turn on systems that stress the circulation. If these actions are repeated frequently because of high alcohol consumption, these effects may expose individuals to a higher risk of heart attacks, stroke or chronic high blood pressure," Floras said.

The American Heart Association does not recommend that anyone start drinking alcohol to prevent heart disease. Reducing risk can be done using other methods such as exercise and following a healthy diet.

More information

The National Institute on Alcohol Abuse and Alcoholism answers frequently asked questions about alcohol and alcohol use.



-- Kevin McKeever



SOURCE: University Health Network, news release, Feb. 12, 2008


'/>"/>
Copyright©2008 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Vestergaard Frandsen to Launch High Tech Filter to Provide Clean and Safe Drinking Water to People in Developing Nations
2. Parental Drinking Boosts Teen Alcohol Risks
3. Sugary Soft Drinks Boost Gout Risk in Men
4. Looking for a Healthy Alternative for Your Childrens Drinks? Try a Glass of Sun Shower(TM) 100% Nectarine Juice
5. Short Chat With Doc Can Curb Problem Drinking
6. Drink a Little, Stay Active, Save Your Heart
7. New Study: Screening for Problem Drinking is One of the Most Cost-Effective Clinical Preventive Services
8. College Drinking Games Lead to Higher Blood Alcohol Levels
9. Brief Chat With ER Docs Can Curb Problem Drinking
10. Brief intervention helps emergency patients reduce drinking
11. Lack of Strong Thirst Signals Leads Elderly to Drink Too Little
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
One Drink May Help Heart, But Two Is Too Many
(Date:10/12/2017)... Fla. (PRWEB) , ... October 12, 2017 , ... IsoComforter, ... therapy products, announced today the introduction of an innovative new design of the shoulder ... pad so you get maximum comfort while controlling your pain while using cold therapy. ...
(Date:10/12/2017)... Rockville, Maryland (PRWEB) , ... October 12, 2017 ... ... a magnetic drug delivery system that we intend to develop to enable prevention ... regimens can lead to severe hearing loss, especially in pediatric patients. For cisplatin, ...
(Date:10/12/2017)... ... October 12, 2017 , ... Leading pediatric oncology experts at Children’s National ... 49th Congress of the International Society of Paediatric Oncology (SIOP) Oct. 12-15. ... for Cancer and Blood Disorders at Children’s National, and Stephen P. Hunger, M.D., ...
(Date:10/12/2017)... ... ... Health Literacy Innovations (HLI), creator of the Health Literacy ... Patient Education Network (CPEN), an independent professional organization that shares best practices in ... , As CPEN’s strategic partner, HLI will help support CPEN members by sharing ...
(Date:10/12/2017)... Washington, D.C. (PRWEB) , ... October 12, 2017 ... ... Company, Cal Dining at the University of California Berkeley, and other leading institutions ... leverages the buying power of institutions to change the way animals are raised ...
Breaking Medicine News(10 mins):
(Date:9/23/2017)... HORSHAM, Pa. , Sept. 22, 2017 ... received a complete response letter from the U.S. Food ... (BLA) seeking approval of sirukumab for the treatment of ... response letter indicates additional clinical data are needed to ... of moderately to severely active RA. ...
(Date:9/19/2017)... --  ZirMed Inc ., a recognized leader in cloud-based revenue ... been ranked #1 by its users for the seventh consecutive ... Survey. ZirMed was recognized as the top-ranked end-to-end revenue cycle ... over 200 beds and holds one of the longest #1 ... ...
(Date:9/12/2017)... and NEW YORK , Sept. 12, 2017   ... for global supply chains, has published the first annual edition of its ... of more than 20,400 companies evaluated by EcoVadis, based on Scorecard Ratings ... 2016. ... CSR Risk & Performance Index ...
Breaking Medicine Technology: