Chronic alcoholism is a highly prevalent and disabling condition, characterized by high rates of morbidity as well as early mortality due to excessive ethanol consumption.
Presentation
The clinical spectrum of chronic alcoholism is an unusual paradox for clinicians. Alcohol use in humans has continued for millennia and moderate amounts of ethanol consumption may actually improve health. However, a subset of drinkers may develop catastrophic complications affecting a multitude of organ systems in the body [1].
Alcohol use, when excessive or chronic, may lead to a variety of adverse effects including and not limited to hepatic dysfunction, cardiovascular disease, neurological injuries, increased risk for malignancies and unintentional accidents. Moderate alcohol intake is to be avoided if it puts the patient at risk (e.g. while driving a car, during pregnancy etc.). Binge drinking and alcohol abuse are amongst the commonest causes of preventable death in the world.
Light-to-moderate alcohol intake is associated with a decreased incidence of coronary heart disease, while heavy drinking may be a precursor for cardiomyopathy. Also, high levels of alcohol use are associated with an elevated risk of developing hepatitis and cirrhosis, especially in males [2].
Alcohol use has been linked with an increased risk for multiple cancers, with many studies confirming the association between alcoholism and breast, esophageal, oropharyngeal, laryngeal, colorectal, and hepatocellular malignancies.
Alcoholism also predisposes to both acute and chronic pancreatitis. Osteoporosis and falls leading to fractures of the hip are more common in alcoholic patients.
Fetal alcohol syndrome, which presents with features such as neurological dysfunction, growth retardation, and characteristic facies, is associated with heavy alcohol use in pregnant women [3] [4].
Chronic alcoholism is also implicated in increased morbidity and mortality from trauma, suicide, and other violent episodes.
Workup
The diagnosis of chronic alcoholism is made primarily by a proper evaluation of the patient’s history. Physical examination findings may only be evident once the patient has suffered serious consequences of chronic alcoholism. The laboratory tests for detecting heavy alcohol use have a low sensitivity. Thus, an early diagnosis can be made by taking a careful history of the individual and the deleterious effects of alcoholism may be avoided.
Alcohol biomarkers may be used to determine the presence of heavy alcohol use [5]. Indirect alcohol biomarkers reflect the adverse effects of alcohol on the various organ systems, while the direct alcohol biomarkers include alcohol and its metabolites.
Alcohol is a common cause of macrocytosis, with a mean corpuscular volume (MCV) of 100-110 fL seen in a majority of patients. The serum aspartate aminotransferase (AST) and alanine aminotransferase (ALT) may be abnormal. A higher elevation of AST compared with an elevation of ALT is characteristic of alcoholic hepatitis. Gamma-glutamyltransferase (GGT) and carbohydrate-deficient transferrin (CDT) levels are also elevated [6] [7]. Other indirect biomarkers include salsolinol, total serum sialic acid (TSA), 5-hydroxytryptophol (5-HTOL), and N-acetyl-beta-hexosaminidase (Beta-Hex).
A serum alcohol level during the routine examination greater than 100 mg/dL is a reliable indicator of chronic alcoholism. The other direct biomarkers include ethyl glucuronide (EtG), acetaldehyde, phosphatidylethanol, and fatty acid ethyl esters (FAEE) [8] [9].
Treatment
Treatment for chronic alcoholism typically involves a combination of medical, psychological, and social interventions. Detoxification is often the first step, followed by rehabilitation programs that include counseling and support groups like Alcoholics Anonymous. Medications such as naltrexone, acamprosate, and disulfiram may be prescribed to reduce cravings and prevent relapse. Long-term follow-up is crucial for sustained recovery.
Prognosis
The prognosis for chronic alcoholism varies depending on the individual's commitment to treatment and the presence of any co-existing medical or psychological conditions. With appropriate treatment and support, many individuals can achieve long-term sobriety and improve their quality of life. However, without intervention, chronic alcoholism can lead to severe health complications and even death.
Etiology
The development of chronic alcoholism is influenced by a combination of genetic, environmental, and psychological factors. Genetic predisposition can increase the risk, while environmental factors such as peer pressure, stress, and availability of alcohol play a significant role. Psychological factors, including mental health disorders like depression and anxiety, can also contribute to the onset of the disease.
Epidemiology
Chronic alcoholism is a widespread issue affecting millions of people worldwide. It is more common in men than women, though the gap is narrowing. The prevalence of alcohol use disorder varies by region, with higher rates in countries with greater alcohol availability and cultural acceptance of drinking. It often begins in young adulthood but can affect individuals at any age.
Pathophysiology
Chronic alcoholism affects multiple organ systems. It primarily impacts the liver, leading to conditions like fatty liver, hepatitis, and cirrhosis. The central nervous system is also affected, resulting in cognitive impairments and neuropathy. Alcohol disrupts neurotransmitter balance, contributing to addiction and withdrawal symptoms. Long-term alcohol use can weaken the immune system and increase the risk of infections.
Prevention
Preventing chronic alcoholism involves addressing risk factors and promoting healthy behaviors. Public health initiatives focus on education about the dangers of excessive drinking and the benefits of moderation. Early intervention in at-risk individuals, such as those with a family history of alcoholism or mental health issues, is crucial. Supportive environments and access to mental health resources can also help prevent the development of the disorder.
Summary
Chronic alcoholism is a serious and complex disease with significant health, social, and economic impacts. It requires a comprehensive approach to diagnosis, treatment, and prevention. Understanding the multifaceted nature of the disorder can aid in effective management and improve outcomes for those affected. Early recognition and intervention are key to preventing the progression of the disease.
Patient Information
For patients and their families, understanding chronic alcoholism is essential for managing the condition. It is important to recognize the signs and symptoms, such as cravings and withdrawal, and seek help early. Treatment options are available and can be tailored to individual needs, including medical support, counseling, and support groups. Recovery is a lifelong process, and ongoing support is vital for maintaining sobriety and improving quality of life.
References
- World Health Organization. International classification of diseases. 10th revision. WHO. 1992.
- Diehl AM. Liver disease in alcohol abusers: clinical perspective. Alcohol. 2002;27:7–11.
- Lieber CS. ALCOHOL: its metabolism and interaction with nutrients. Annu Rev Nutr. 2000;20:395–430.
- Klatsky AL, Chartier D, Udaltsova N, et al. Alcohol drinking and risk of hospitalization for heart failure with and without associated coronary artery disease. Am J Cardiol. 2005;96:346–351.
- US Department of Health and Human Services. Center for Substance Abuse Treatment. Substance Abuse and Mental Health Services Administration. The Role of Biomarkers in the Treatment of Alcohol Use Disorders. 2006.
- Moussavian SN, Becker RC, Piepmeyer JL, Mezey E, Bozian RC. Serum gamma-glutamyl transpeptidase and chronic alcoholism. Influence of alcohol ingestion and liver disease. Dig Dis Sci. 1985;30:211–214.
- Hannuksela ML, Liisanantti MK, Nissinen AE, Savolainen MJ. Biochemical markers of alcoholism. Clin Chem Lab Med. 2007;45(8):95361.
- Das SK, Dhanya L, Vasudevan DM. Biomarkers of alcoholism: an updated review. Scand J Clin Lab Invest. 2008;68(2):8192.
- Peterson K. Biomarkers for alcohol use and abuse. Alcohol Res Health. 2004/2005; 28(1):30-37.