ALCOHOLIC LIVER DISEASE UNVEILED: EPIDEMIOLOGY, CAUSES, MECHANISMS, AND LIFELONG IMPACT

Pharmacy

Alcoholic liver disease (ALD) is a major global health concern caused by chronic excessive alcohol consumption, manifesting as a spectrum of disorders from steatosis to alcoholic hepatitis, fibrosis, and cirrhosis. This article provides an overview of ALD, addressing its epidemiology, etiology, pathophysiology, and consequences. Epidemiologically, alcohol affects millions worldwide, with prevalence tied to alcohol consumption patterns, peaking in regions like Eastern Europe and among men aged 40-60, though women are more susceptible at lower doses. Etiologically, ALD results from prolonged heavy drinking, modulated by genetic polymorphisms (e.g., ALDH2, PNPLA3), gender, malnutrition, and comorbidities like hepatitis C. The pathophysiology involves a cascade of alcohol metabolism-induced oxidative stress, acetaldehyde toxicity, and inflammation, progressing from reversible steatosis to severe alcoholic hepatitis and irreversible cirrhosis. Key mechanisms include reactive oxygen species generation, cytokine-mediated inflammation via gut-liver axis disruption, and hepatic stellate cell activation driving fibrogenesis. The consequences are profound, encompassing liver-related complications (e.g., portal hypertension, hepatocellular carcinoma), systemic effects (e.g., infections, cardiovascular disease), and significant economic and social burdens due to healthcare costs and reduced quality of life. Early stages of ALD are reversible with abstinence, but advanced disease requires complex interventions like transplantation. This article underscores the need for public health strategies to reduce harmful alcohol use, enhance screening, and improve access to addiction treatment to mitigate alcohol’s impact. By elucidating the multifaceted nature of ALD, we aim to inform prevention and management efforts.

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