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Alcohol's Impact on the Cardiovascular System.

Michael Roerecke1,2,3

  • 1Centre for Addiction and Mental Health (CAMH), Institute for Mental Health Policy Research, 33 Ursula Franklin Street, Toronto, ON M5T 2S1, Canada.

Nutrients
|October 23, 2021
PubMed
Summary

The relationship between alcohol consumption and cardiovascular diseases (CVDs) is complex. Less alcohol intake is generally better for cardiovascular health, though research is ongoing.

Keywords:
alcohol drinkingbinge drinkingcardiovascular diseaseshypertensionischaemic heart diseasereviewstroke

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Area of Science:

  • Cardiology
  • Epidemiology
  • Public Health

Background:

  • Alcohol consumption exhibits complex and paradoxical associations with cardiovascular diseases (CVDs).
  • Hundreds of epidemiological studies have investigated this relationship over recent decades.
  • Understanding these links is crucial for public health recommendations.

Purpose of the Study:

  • To review epidemiological evidence on alcohol consumption and various cardiovascular diseases (CVDs).
  • To examine associations between average consumption, drinking patterns, alcohol use disorders, and specific CVDs.
  • To discuss methodological challenges in current research.

Main Methods:

  • Narrative review of epidemiological studies.
  • Examination of systematic reviews and meta-analyses.
  • Discussion of methodological shortcomings including exposure classification, reference groups, and confounding variables.

Main Results:

  • Evidence suggests non-linear relationships between alcohol intake and many CVDs.
  • Conflicting associations exist depending on exposure measurement and CVD outcome.
  • Methodological limitations complicate definitive conclusions.

Conclusions:

  • Further large-scale longitudinal studies with detailed measurements are needed.
  • Elucidating complex alcohol-CVD associations requires accounting for genetic and confounding factors.
  • For individuals consuming alcohol, reduced intake is advisable for better health outcomes.