Heavy Alcohol Consumption is Associated with Impaired Endothelial Function.

Area of Science:

• Cardiovascular Health
• Alcohol Research
• Endothelial Function

Background:

• Moderate alcohol intake may protect against cardiovascular disease, while heavy consumption increases risk.
• Endothelial dysfunction is a key factor in atherosclerosis and cardiovascular disease development.
• Limited population-based studies investigate alcohol's impact on endothelial function.

Purpose of the Study:

• To examine the association between alcohol consumption and endothelial function in Japanese men.
• To determine if heavy alcohol intake is an independent risk factor for endothelial dysfunction.

Main Methods:

• Cross-sectional analysis of 404 Japanese men (aged 30-79).
• Assessment of alcohol consumption (grams of ethanol per day).
• Measurement of endothelial function via brachial artery flow-mediated dilation (%FMD).
• Logistic regression analysis adjusted for multiple cardiovascular risk factors.

Main Results:

• Heavy alcohol consumption (≥ 46 g/day ethanol) was associated with lower mean %FMD.
• Heavy drinkers showed significantly higher odds of low %FMD (multivariable-adjusted OR: 2.39; 95% CI: 1.15-4.95).
• Former drinkers also had increased odds of low %FMD, though not statistically significant in multivariable analysis.

Conclusions:

• Heavy alcohol consumption appears to be an independent risk factor for endothelial dysfunction in Japanese men.
• Findings suggest a detrimental effect of high ethanol intake on vascular health.