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:6/26/2016)... , ... June 26, 2016 , ... Brent Kasmer, a legally blind and certified personal ... personalized through a fitness app. The fitness app plans to fix the two major problems ... offer a one size fits all type program , They don’t eliminate all ...
(Date:6/25/2016)... ... June 25, 2016 , ... "With 30 hand-drawn hand ... project," said Christina Austin - CEO of Pixel Film Studios. , ProHand Cartoon’s ... within Final Cut Pro X . Simply select a ProHand generator and drag ...
(Date:6/25/2016)... ... 25, 2016 , ... Conventional wisdom preaches the benefits of moderation, whether it’s ... setting the bar too high can result in disappointment, perhaps even self-loathing. However, those ... goal. , Research from PsychTests.com reveals that behind the tendency to ...
(Date:6/24/2016)... ... 24, 2016 , ... The Pulmonary Hypertension Association (PHA) learned ... receive two significant new grants to support its work to advance research and ... by recognizing patients, medical professionals and scientists for their work in fighting pulmonary ...
(Date:6/24/2016)... TX (PRWEB) , ... June 24, 2016 , ... People ... part in Genome magazine’s Code Talker Award, an essay contest in which patients and ... an award to be presented at the 2016 National Society of Genetic Counselors (NSGC) ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... Research and Markets has announced the ... Tests" report to their offering. ... The World Market for Companion Diagnostics covers the ... analysis in the report includes the following: ... Kits) by Region (N. America, EU, ROW), 2015-2020 , ...
(Date:6/24/2016)...   Pulmatrix, Inc ., (NASDAQ: PULM ... announced today that it was added to the Russell ... comprehensive set of U.S. and global equity indexes on ... milestone for Pulmatrix," said Chief Executive Officer Robert ... progress in developing drugs for crucial unmet medical needs, ...
(Date:6/24/2016)... June 24, 2016  Arkis BioSciences, a leading ... and more durable cerebrospinal fluid treatments, today announced ... Series-A funding is led by Innova Memphis, followed ... other private investors.  Arkis, new financing will accelerate ... the market release of its in-licensed Endexo® technology. ...
Breaking Medicine Technology: