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Chronic Alcohol Use and Accelerated Brain Aging: Shared Mechanisms with Alzheimer's Disease Pathophysiology
Nishtha Singh1, Shouvik Kumar Nandy1, Aditi Sharma1
1Department of Pharmacology, School of Pharmaceutical Sciences, Shoolini University, Solan 173229, Himachal Pradesh, India.
Brain Sciences
|January 28, 2026
Summary
Heavy alcohol consumption worsens Alzheimer's disease (AD) pathology by damaging brain regions and accelerating neurodegeneration. Reducing alcohol intake may lower dementia risk.
Area of Science:
- Neuroscience
- Neurology
- Toxicology
Background:
- Alzheimer's disease (AD) is a progressive neurodegenerative disorder.
- The impact of light to moderate alcohol consumption on AD is uncertain.
- Heavy alcohol use impairs cognitive brain regions and exacerbates AD pathology.
Purpose of the Study:
- To review mechanisms of alcohol-induced neuronal damage.
- To explore the relationship between alcohol consumption and Alzheimer's disease.
- To summarize how alcohol affects brain regions critical for cognition.
Main Methods:
- Review of current scientific literature.
- Analysis of studies on alcohol's effects on brain structure and function.
- Examination of molecular mechanisms linking alcohol to neurodegeneration.
Main Results:
- Excessive alcohol impairs key brain regions like the hippocampus and prefrontal cortex.
- Alcohol consumption increases oxidative stress, neuroinflammation, and disrupts tau protein.
- Evidence suggests a dose-dependent relationship between alcoholism and AD vulnerability.
Conclusions:
- Alcohol-related neurodegeneration shares similarities with AD pathogenesis.
- Reducing harmful alcohol use may be a strategy to mitigate dementia risk.
- Chronic alcohol consumption accelerates brain aging and neuronal damage relevant to AD.
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