Epigenetics and Mental Health

Pharmacogenetics and Epigenetics

The field of public health has been characterized by an increase in studies focusing on the role of epigenetics in the development of mental illnesses and response to psychopharmaceutical agents. Such studies have gained traction because mental illnesses are highly complex and have a multifactorial origin. Mental illnesses are characterized by complex intersections between genetic and environmental factors that shape their emergence and development. The role of epigenetics on the development of mental illnesses has become a major issue of focus due to the effect of epigenetics on an individual’s potential for resiliency to anxiety, stress, and depression. The implications of epigenetics for mental health have been the subject of a growing field of health care research.

Kular & Kular (2018) conducted a study to examine the role of epigenetics in psychiatry in terms of existing clinical opportunities and potential challenges in the future. These researchers conducted the study on the backdrop that mental/psychiatric disorders are clinically heterogeneous and devastating chronic diseases. These illnesses are characterized by a complex interaction between gene variants and environmental factors. Epigenetic processes like histone posttranslational alterations and DNA methylation shape how tissues or cells interpret external signals. These processes instruct cells/tissues to appropriately interpret outside signals and change its function accordingly. Epigenetic studies in the field of mental health have the potential for promoting a better understanding and treatment of disease since epigenetic changes are sensitive to the environment, reversible, and stable. The study sought to examine clinical opportunities and challenges emerging from epigenetic studies in mental health. The study found that the use of methylation modifications as diagnostic markers of disease phenotype is promising in enhancing response to treatment. Therefore, these researchers conclude that epigenetics offers new insights that can help generate a comprehensive understanding of mental illnesses and ultimately improve nosology, prevention, and treatment of psychiatric illnesses.

As evident from the study, epigenetics research has potential effects on the understanding and treatment of mental illnesses. This study demonstrates that epigenetics would affect the diagnosis and treatment of psychiatric disorders by providing new insights into the interpretation of these illnesses. The improved interpretation of these disorders is linked to the fact that epigenetic changes are sensitive to the environment. The mechanisms in epigenetics shape how cells or tissues interpret internal and external signals and adjust accordingly. Internal and external signals play a critical role in the development of mental/psychiatric disorders. Internal signals refer to genes whereas external signals refer to environmental factors. Mental or psychiatric disorders involve a complex interplay between genes and the environment.

Miller (2021) suggests that epigenetic research would shape the understanding and treatment of mental illnesses given the collision between epigenetics and pharmacogenomics. The collision between the two is attributable to the fact that current pharmacogenomic testing in psychiatry is not evidence-based as it is used to determine the metabolic activity of an enzyme in order to identify medication to prescribe. Epigenetics research is likely to contribute to changes in how psychiatric disorders are treated through promoting the formation of new hypotheses.

In light of insights obtained from the two articles, psychiatric providers are likely to examine epigenetic modifications and heritability when determining how to prescribe in the future. Epigenetic modifications and heritability will be taken into consideration because of their role in the ultimate expression of a certain gene and its phenotype (Miller, 2021). Therefore, future prescription decisions by psychiatric providers are likely to be influenced by epigenetic changes rather than the unchanging DNA sequence of a gene. As noted by Kular & Kular (2018), a biopsychosocial approach, which involves a combination of psychosocial therapy and pharmacological treatment, is likely to dominate future treatment of psychiatric disorders.