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Consequences of alcohol consumption on host defence
1Department of Medicine, University of Massachusetts Medical Center, Worcester 01655, USA.
Alcohol and Alcoholism (Oxford, Oxfordshire)
|February 5, 2000
Summary
Alcohol consumption, both acute and chronic, weakens the immune system, increasing infection risk. This impairment affects various immune cells and responses, compromising host defense against pathogens.
Area of Science:
- Immunology
- Toxicology
- Infectious Diseases
Background:
- Alcohol consumption is widespread and known to affect health.
- The impact of alcohol on the immune system is complex and multifaceted.
- Understanding alcohol's immunomodulatory effects is crucial for public health.
Purpose of the Study:
- To review and summarize current literature on the immunomodulatory effects of alcohol.
- To elucidate the impact of acute and chronic alcohol consumption on host defense.
- To discuss the functional abnormalities of immune cells induced by alcohol.
Main Methods:
- Literature review of recent studies.
- Synthesis of current scientific views on alcohol's immunomodulatory effects.
- Analysis of data from human, animal, and in vitro studies.
Main Results:
- Alcohol consumption impairs host defense, increasing susceptibility to bacterial and viral infections.
- Impaired immunity is linked to reduced inflammatory response, altered cytokine production, and abnormal reactive oxygen species generation.
- Cellular immunity, including T lymphocyte and antigen-presenting cell function, is significantly compromised by alcohol.
Conclusions:
- Both acute and chronic alcohol use detrimentally affect immune function.
- Alcohol-induced immune dysfunction involves direct effects on lymphocytes and impaired antigen presentation.
- Altered immune responses, including a shift towards Th2 immunity, are observed in alcohol consumers.