Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New study ties moderate beer drinking to lower heart attack risk

30.12.2002


A beer a day may help keep heart attacks away, according to a group of Israeli researchers. In preliminary clinical studies of a group of men with coronary artery disease, the researchers showed that drinking one beer (12 ounces) a day for a month produced changes in blood chemistry that are associated with a reduced risk of heart attack.



Their study adds to growing evidence that moderate alcohol consumption may reduce the risk of heart disease, the number one killer in the United States. Their findings are scheduled to appear in the Jan. 29 print edition of the Journal of Agricultural and Food Chemistry, a peer-reviewed publication of the American Chemical Society, the world’s largest scientific society.

Heart-healthy changes observed in the blood of the test participants following beer-drinking include decreased cholesterol levels, increased antioxidants and reduced levels of fibrinogen, a clot-producing protein, according to the researchers.


The study also showed, for the first time, that drinking alcoholic beverages causes structural changes in fibrinogen that make the clotting protein less active, says lead investigator Shela Gorinstein, Ph.D., a researcher with The Hebrew University of Jerusalem in Israel. Characterizing these structural changes of fibrinogen may one day serve as a new diagnostic indicator of heart attack risk, along with known risk indicators such as blood cholesterol and antioxidant levels, she says. Further studies are needed.

Forty-eight (48) men, ages 46-72, with coronary artery disease were divided evenly into two groups. Individuals in one group drank the equivalent of 12 ounces (one standard can or bottle) of beer a day for 30 consecutive days, while the others drank mineral water. Both groups ate a similar diet, rich in fruits and vegetables, during this period.

In 21 of the 24 patients in the beer-drinking group, the researchers found positive changes in blood chemicals that are associated, on the basis of previous studies by Gorinstein and others, with a decreased heart attack risk. These changes include a decrease in "bad" cholesterol, an increase in "good" cholesterol, an increase in antioxidant levels, and a decrease in levels and activity of fibrinogen.

These changes, most likely produced by the relatively high polyphenol content of beer, were generally not seen in the blood of the non-beer-drinking group, the researchers say.

No heart attacks occurred among either patient group during the study period, they say. The patients are currently being monitored to evaluate long-term heart attack risk and survival rates, but results are not yet available.

Although the beer used in this study was a standard pale lager (5 percent alcohol by volume), other beers are likely to have a similar effect, the researchers add.

The current study adds to a growing number of studies that have linked moderate alcohol consumption to a reduced risk of coronary heart disease and heart attack. Epidemiological studies have shown that moderate drinkers have a lower risk of heart disease than both heavy drinkers and non-drinkers.

Both polyphenol and alcohol are thought to contribute to this heart-healthy effect. Based on previous studies, it appears that polyphenols play the major role in this effect, while alcohol plays a lesser role, says Gorinstein.

Beverage type may also play a role in heart disease risk. In recent publications by Gorinstein and others, it was shown that red wine might offer more heart-protective effects than white wine and beer. This has been attributed to the red wine’s high content of polyphenols compared with lower amounts in the other beverages, the researcher says.

An association between moderate drinking and lowered heart disease risk does not necessarily mean that alcoholic beverages are the only cause, however. Some studies suggest that lifestyle factors, such as diet and exercise, may help account for some of the association between lower heart disease risk and drinking.

Until this association between alcohol and lower heart disease risk is clarified, people who choose to drink alcohol are advised to do so in moderation, says the researcher. The U.S. Department of Agriculture and the U.S. Department of Health and Human Services define moderate drinking as not more than two drinks per day for men and no more than one drink per day for women. A standard drink is 12 grams of alcohol, equivalent to one 12-ounce can or bottle of beer, one 5-ounce glass of wine, or 1.5 ounces of 80-proof distilled spirits.

Funding for this study was provided by The Hebrew University.


The online version of the research paper cited above was initially published Dec. 24 on the journal’s Web site. Journalists can arrange access to this site by sending an e-mail to newsroom@acs.org or calling the contact person for this release.


Beverly Hassell | EurekAlert!

More articles from Health and Medicine:

nachricht NIST scientists discover how to switch liver cancer cell growth from 2-D to 3-D structures
17.11.2017 | National Institute of Standards and Technology (NIST)

nachricht High speed video recording precisely measures blood cell velocity
15.11.2017 | ITMO University

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: A “cosmic snake” reveals the structure of remote galaxies

The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.

Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...

Im Focus: Visual intelligence is not the same as IQ

Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.

That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...

Im Focus: Novel Nano-CT device creates high-resolution 3D-X-rays of tiny velvet worm legs

Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.

During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....

Im Focus: Researchers Develop Data Bus for Quantum Computer

The quantum world is fragile; error correction codes are needed to protect the information stored in a quantum object from the deteriorating effects of noise. Quantum physicists in Innsbruck have developed a protocol to pass quantum information between differently encoded building blocks of a future quantum computer, such as processors and memories. Scientists may use this protocol in the future to build a data bus for quantum computers. The researchers have published their work in the journal Nature Communications.

Future quantum computers will be able to solve problems where conventional computers fail today. We are still far away from any large-scale implementation,...

Im Focus: Wrinkles give heat a jolt in pillared graphene

Rice University researchers test 3-D carbon nanostructures' thermal transport abilities

Pillared graphene would transfer heat better if the theoretical material had a few asymmetric junctions that caused wrinkles, according to Rice University...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Ecology Across Borders: International conference brings together 1,500 ecologists

15.11.2017 | Event News

Road into laboratory: Users discuss biaxial fatigue-testing for car and truck wheel

15.11.2017 | Event News

#Berlin5GWeek: The right network for Industry 4.0

30.10.2017 | Event News

 
Latest News

Heavy nitrogen molecules reveal planetary-scale tug-of-war

20.11.2017 | Earth Sciences

Taking a spin on plasma space tornadoes with NASA observations

20.11.2017 | Physics and Astronomy

NASA detects solar flare pulses at Sun and Earth

17.11.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>