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Chronic Intermittent Ethanol Vapor Exposure Paired with Two-Bottle Choice to Model Alcohol Use Disorder
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Cardiac Responses to Alcohol: A Review of Mechanisms and Clinical Implications

Kristine E Johnston1, Aishwarya Kamble1, Joanna Lee1

  • 1Department of Medicine, St Mary Medical Center, Langhorne, PA 19047, USA.

Reviews in Cardiovascular Medicine
|June 4, 2026
PubMed

Insights

Heavy alcohol consumption harms heart health, impacting blood pressure, heart rate, and increasing risks for cardiovascular diseases. Research on moderate drinking shows mixed results, with no level recommended for cardiac benefits.

Area of Science:

  • Cardiology
  • Public Health

Background:

  • Alcohol consumption has a long history.
  • Recent research links alcohol to cardiovascular diseases.
  • Understanding alcohol's cardiac effects is crucial.

Purpose of the Study:

  • To review current literature on alcohol's effects on the heart.
  • To examine impacts on blood pressure, heart rate, and cardiovascular conditions.
  • To evaluate the evidence for both heavy and moderate drinking.

Main Methods:

  • Comprehensive literature review.
  • Analysis of studies on alcohol's effects on cardiovascular parameters.
  • Synthesis of evidence regarding coronary artery disease, cardiomyopathy, and arrhythmias.

Main Results:

  • Acute and chronic heavy alcohol intake negatively affects blood pressure, heart rate, and autonomic function.
  • Heavy drinking increases risks for coronary artery disease, cardiomyopathy, and arrhythmias.
  • Evidence on mild to moderate drinking is conflicting, with some suggesting benefits and others showing increased risks for hypertension and atrial fibrillation.

Conclusions:

  • Current evidence confirms detrimental cardiac effects of heavy alcohol consumption.
  • The benefits of mild to moderate alcohol intake are inconclusive and potentially confounded.
  • No level of alcohol consumption should be promoted for cardiac health benefits.

Keywords:
alcoholarrhythmiablood pressurecardiaccardiomyopathycoronary artery diseaseheart

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