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Summary
Moderate alcohol consumption may offer some protection against ischemic heart disease. However, alcohol intake increases risks for cerebrovascular accidents and overall mortality, making it unsuitable advice for abstainers.
Area of Science:
- Cardiology
- Epidemiology
- Toxicology
Background:
- Epidemiologic studies indicate a potential protective effect of moderate alcohol consumption against ischemic heart disease.
- Conversely, alcohol intake at all levels is linked to increased risks of cerebrovascular accidents and overall mortality.
Purpose of the Study:
- To evaluate the net effect of alcohol consumption on cardiovascular health and overall mortality.
- To determine the appropriateness of recommending alcohol for coronary artery disease prevention.
Main Methods:
- Review of epidemiologic studies on alcohol consumption and cardiovascular outcomes.
- Analysis of the impact of acute and chronic alcohol ingestion on cardiac function and myocardial tissue.
Main Results:
- Moderate alcohol intake shows a correlation with reduced ischemic heart disease risk.
- All levels of alcohol consumption are associated with elevated risks of cerebrovascular accidents and increased overall mortality.
- Acute heavy alcohol intake negatively impacts myocardial contractility and cellular biochemical processes.
- Chronic alcoholism leads to congestive cardiomyopathy (alcoholic cardiomyopathy), irrespective of nutritional status.
Conclusions:
- It is inappropriate to advise non-drinkers to commence alcohol consumption for coronary artery disease prevention.
- The adverse effects of alcohol on cerebrovascular events and overall mortality outweigh potential benefits for ischemic heart disease.