For this discussion, identify a real-world social issue and …

For this discussion, identify a real-world social issue and discuss how biological or genetic factors may influence the issue. Examples of social problems include bullying, criminology, obesity, and alcoholism. Select a social issue for this post and discuss some of the biological or genetic factors that can negatively influence this issue. Consider the following in your initial post: Be sure to find and cite supporting evidence for your viewpoint.

Title: The Influence of Biological and Genetic Factors on Alcoholism


Alcoholism is a significant social issue that affects individuals, families, and communities worldwide. It is a complex disorder with multifaceted causes, including both environmental and genetic factors. In recent years, scientific advancements have shed light on the influence of biological and genetic factors in understanding the development and progression of alcoholism. This paper will discuss some of the biological and genetic factors that can negatively influence the issue of alcoholism, drawing upon current research to support the analysis.

Genetics and Alcoholism:

Several studies have established a strong link between genetics and alcoholism. Genetic predisposition plays a crucial role in an individual’s vulnerability to developing alcohol use disorder (AUD), the clinical term for alcoholism. Twin and adoption studies have consistently shown higher rates of AUD among individuals with a family history of alcoholism, suggesting a genetic component.

The familial clustering of AUD indicates that genetic factors are involved. Concordance rates for AUD are significantly higher among monozygotic (identical) twins than dizygotic (fraternal) twins, providing further evidence for the genetic influence. According to a study by Knopik (2009), the heritability of alcohol dependence is estimated to be around 50-60%, indicating that genetic factors contribute significantly to its development.

Genes Associated with Alcoholism:

Numerous genes have been associated with alcoholism, with variations in these genes influencing an individual’s susceptibility to AUD. One of the most well-known genes implicated in alcoholism is the alcohol dehydrogenase gene (ADH). ADH is involved in alcohol metabolism, and certain variations in this gene lead to different rates of alcohol breakdown, affecting the tolerance and sensitivity to alcohol.

Another important gene associated with alcoholism is the dopamine receptor gene (DRD2). Dopamine is a neurotransmitter that plays a role in the reward system, and alterations in DRD2 gene expression have been linked with decreased dopamine sensitivity. Individuals with specific variations in this gene may experience reduced pleasure upon alcohol consumption, increasing their risk of developing alcohol dependence as they seek higher levels of stimulation.

Epigenetics and Alcoholism:

The interaction between genetic factors and the environment is a crucial area of research in understanding alcoholism. Epigenetics, a field that explores how gene expression is influenced by external factors, has provided insights into how environmental factors such as stress, trauma, and early-life experiences can affect an individual’s susceptibility to AUD.

Studies have shown that stressful experiences can lead to modifications in gene expression, particularly in regions of the brain associated with addiction and reward. These changes in gene expression can, in turn, influence an individual’s vulnerability to alcoholism. For example, a study by Ponomarev et al. (2012) demonstrated that chronic alcohol exposure altered DNA methylation patterns in mice, leading to changes in gene expression and increased alcohol preference.

Neurobiology of Alcoholism:

Further exploration into the neurobiology of alcoholism has highlighted the involvement of specific brain regions and neurotransmitter systems. The mesolimbic dopamine system, which mediates reward and motivation, has been extensively studied in the context of alcohol addiction. Chronic alcohol exposure leads to adaptations in this system, leading to increased dopamine release in response to alcohol and blunted dopamine response to natural rewards.

The prefrontal cortex, involved in decision-making and impulse control, also plays a significant role in alcoholism. Neuroimaging studies have demonstrated structural and functional differences in the prefrontal cortex of individuals with AUD, suggesting impairments in executive functions and decision-making processes. These brain alterations contribute to the development and maintenance of alcohol dependence.


In conclusion, biological and genetic factors significantly influence the issue of alcoholism. The heritability of alcohol dependence and the association of specific genes with alcoholism highlight the genetic predisposition to AUD. Epigenetic modifications resulting from environmental factors and the neurobiological alterations observed in brain regions associated with reward and decision-making further contribute to the development of alcohol dependence. Understanding these biological and genetic influences is crucial for targeted prevention and intervention strategies to address alcoholism as a social problem.