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Alcohol as a risk factor for hemorrhagic stroke.
Sajjan Daniel1, Dániel Bereczki
1University of Debrecen, Health Science and Medical Center, Department of Neurology, Debrecen.
Ideggyogyaszati Szemle
|August 28, 2004
Summary
Heavy alcohol consumption increases hemorrhagic stroke risk. Moderate drinking may also raise risk, unlike its protective effect against ischemic stroke.
Area of Science:
- Neurology
- Epidemiology
- Public Health
Background:
- Mild-to-moderate alcohol consumption is linked to reduced ischemic stroke risk.
- Evidence on alcohol's effect on hemorrhagic stroke is conflicting.
Purpose of the Study:
- To review and synthesize findings from case-control and cohort studies on alcohol consumption and hemorrhagic stroke.
- To clarify the relationship between different levels of alcohol intake and hemorrhagic stroke risk.
Main Methods:
- Systematic review of epidemiologic studies.
- Medline searches using keywords like 'alcohol', 'stroke', 'cerebral hemorrhage', and 'hemorrhagic stroke'.
Main Results:
- Heavy alcohol consumption is consistently associated with increased hemorrhagic stroke risk.
- Moderate alcohol consumption shows conflicting results, with some studies suggesting a protective effect and others a dose-dependent increase in risk.
- Potential mechanisms include alcohol-induced blood pressure surges and coagulation disturbances.
Conclusions:
- Heavy drinking is a significant risk factor for hemorrhagic stroke.
- Moderate alcohol consumption may increase hemorrhagic stroke risk, contrasting with its known benefits for ischemic stroke.