Thomas S. May, M.A.

Medical Writer

 

 

Home

 

Portfolio

 

Contact



The Alcoholic Buzz: Drinking Patterns Affect Life Span

 

Thomas S. May, Medical Writer

Introduction

A growing body of scientific evidence shows that people who drink one or two alcoholic beverages a day are generally healthier and tend to live longer than those who don't drink at all. This does not mean, however, that having one or two drinks a day on average is necessarily good for you.

If you regularly down a couple of six-packs or 10-12 glasses of wine each weekend and drink nothing on weekdays, brace yourself for bad news: Just because that averages out to one or two per day doesn't mean you are a "moderate drinker." In fact, research shows that frequent binge drinking like that is quite harmful and can significantly reduce your life span.

The drinking pattern is just as important as how much you drink. A study published in Addiction (June 2000) found that people who had six drinks 1-2 days a week were more likely to report chronic conditions than those who had one or two a day, 6-7 days a week. The group who drank more weekly was also much more likely to report at least three health problems than those who drank less.
 


 
Just because weekend binges average out to one or two drinks per day doesn't mean you are a "moderate drinker."

The results of this study appear to confirm the findings of some earlier research on what drinking patterns do to health and longevity. "Having one to two drinks a day has been reported to reduce the risk of death from cardiovascular diseases such as stroke or acute myocardial infarction [heart attack]," says the study's lead author, Begonia San Jose of Rotterdam's Addiction Research Institute. "Occasional heavy drinking or 'binge drinking,' on the other hand, has been shown to have the opposite effect," she adds. "In our study, we also found the same type of relationship between drinking patterns and subjective health outcomes like perceived general health, chronic conditions, and health complaints."
 

 

Paradox Explained

For a long time, scientists have been puzzled by an apparent contradiction regarding the effects of alcohol consumption on health.

Studies have consistently found that the rates of heart disease and mortality are lower in Mediterranean countries, like France for instance, where most people consume relatively large amounts of alcohol each week. This is believed to be because of alcohol's "cardioprotective" qualities. Yet, in Russia and many other Eastern European countries, where average alcohol consumption is comparable to the amount consumed in France, the rates of cardiovascular disease and death are much higher.

The differences in drinking patterns between these two cultures explain the paradox, according to a study published in the Journal of Epidemiology and Community Health (May 2000). "In Mediterranean countries, alcohol is typically consumed as wine with meals, whereas in Russia it is much more likely to be drunk as spirits, in binges," the study authors claim.
 

Whats the Difference

How can the same amount of alcohol--if drunk within a day or 2--be so harmful, yet be quite healthful when gradually consumed over the course of an entire week? The answer seems to lie with alcohol's short-term "dose-response effect," according to Kari Poikolainen, MD, director of research at the Finnish Foundation for Alcohol Studies.

Alcohol can have both positive and negative effects on the body, depending on the amount consumed, Dr. Poikolainen says. "Positive effects dominate at the moderate intake level, and negative effects dominate following heavy drinking," he explains.

Dr. Poikolainen says that positive effects include

 

  • An increase in HDL ("good") cholesterol, which can help prevent blockage of the arteries.
  • A lowered risk of developing blood clots, resulting in a reduced risk of heart attacks and certain types of strokes.

Negative effects include

 

  • A surge in blood pressure.
  • A higher risk of developing arrhythmias (disturbances in heart rhythm).

Both of these conditions are linked to a greater chance of stroke or other cardiovascular event.

Sudden changes in blood pressure after binge drinking may also explain some of the harmful effects. A study conducted by Kaija Seppa, MD, of the Tampere University Medical School in Finland found that "drinking seems to increase both systolic and diastolic blood pressure (BP) during intoxication but not during hangover. During the period when blood alcohol levels are decreasing, both pressure levels fall to less than the basic level. These major and rapid changes in BP values might increase the likelihood of strokes, which are seen in increased numbers among young adults, especially during weekends and holidays."

Most experts believe that having one or two alcoholic drinks a day, preferably with meals, is good for cardiovascular health, and may result in a moderate increase in life span. "For healthy adults, steady moderate drinking results in improved health and longer life span," says Dr. Poikolainen. He advises against occasional heavy (binge) drinking, however, and cautions that even moderate drinking is not recommended for everyone. "Abstaining might be the healthiest choice for people afflicted with certain conditions like depression, high blood pressure, liver disease, or stomach ulcer. The risk of alcohol dependence should also be considered," he cautions.
 

 

Short-term effects of moderate alcohol consumption (1-2 drinks)

 

 

  • Increase in HDL ("good") cholesterol.
  • Decreased risk of blood clotting.
  • Reduction in anxiety.
  • Increased sociability.

Short-term effects of heavy drinking (4-5 drinks or more)

 

  • Increase in blood pressure.
  • Risk of arrhythmia (disturbances in the rhythm of the heart).
  • Impairment in heart rate variability, making the heart not adapt well to body's changing needs.
  • Impaired judgment and longer reaction times.


 


 

 


Thomas S. May is a freelance medical writer.

Reviewer: Beth Israel Deaconess Medical Center. Reviewed for medical accuracy by physicians at Beth Israel Deaconess Medical Center (BIDMC), Harvard Medical School. BIDMC does not endorse any products or services advertised on this Web site.

 


Source: Medscape Health
Copyright: © 2000 Medscape, Inc.
Posted On Site: Oct. 2000
Publication Date: Sep. 2000
 

 


Reprinted from Medscape Health for Consumers.

 

Home  Portfolio  Contact