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:12/2/2016)... ... December 02, 2016 , ... Rijuven Corp launches rejiva ( http://www.rejiva.com ), a ... No other wearable health technology on the market can deliver all that rejiva can. ... meaningful insights about their health than the usual heart rate and steps taken”, adds ...
(Date:12/2/2016)... ... 02, 2016 , ... On November 24th, 2016, Thanksgiving morning, ... different sites throughout Miami-Dade and Broward counties. This is the largest meal delivery ... Thanksgiving morning by putting together individual meals via assembly lines and passing them ...
(Date:11/30/2016)... ... November 30, 2016 , ... ... that we have been designated as a Cigna Infertility Center of Excellence. The ... performance standards. , “It’s an honor to be designated a Cigna Infertility ...
(Date:11/30/2016)... Gardens, FL (PRWEB) , ... November 30, 2016 ... ... eating disorder and mental health treatment has announced the opening of a new ... specialized partial hospitalization and intensive outpatient treatment for adults and adolescents, both males ...
(Date:11/30/2016)... Austin, TX (PRWEB) , ... November 30, 2016 ... ... like to remind the clinical research community that the FDA Binding Guidance goes ... submit data in FDA-supported formats listed in the FDA Data Standards Catalog. The ...
Breaking Medicine News(10 mins):
(Date:12/2/2016)... 2, 2016 On Thursday, December ... excellence in research, development and innovation in the biopharmaceutical ... was held in the presence of Sergey Tsyb, Vice ... Russian Federation , Natalia Sanina, First Vice Chairman ... , Head of Roszdravnadzor, National Service of Control in ...
(Date:12/2/2016)... Dec. 2, 2016 CVS Health Corporation (NYSE: ... Day in New York City on Thursday, December 15, 2016, beginning at 8:00 ... team will provide an in-depth review of the company,s ... The company will also discuss 2017 earnings guidance during ... of the event will be broadcast simultaneously on the ...
(Date:12/2/2016)... YORK , December 2, 2016 ... the trading session in red, while the Dow Jones Industrial ... at the close of US markets, which prompted Stock-callers this ... stocks: NuVasive Inc. (NASDAQ: NUVA ), Smith & ... (NASDAQ: NXTM ), and Cesca Therapeutics Inc. (NASDAQ: ...
Breaking Medicine Technology: