Neurodegenerative diseases have a significant impact on individuals and society. The exact causes of these diseases are not fully understood, but evidence suggests that a combination of genetic, environmental, and lifestyle factors contribute to their development. Methods: This narrative review explores the role of epigenetic regulation in gene expression during the development of neurodegenerative diseases. An exhaustive literature search was conducted using electronic databases, and articles focusing on epigenetic regulation in the context of neurodegenerative diseases were selected for analysis. Epigenetic mechanisms, including DNA methylation, histone modifications, and non-coding RNA molecules, play a crucial role in regulating gene activity and have significant implications for cellular function and disease development. Abnormal DNA methylation patterns have been associated with neurological disorders and neurodegenerative diseases, such as Alzheimer's disease and Parkinson's disease. Histone modifications have also been implicated in the regulation of gene expression in neurodegenerative diseases. Non-coding RNAs, including microRNAs and long non-coding RNAs, are involved in gene expression regulation and have been found to be dysregulated in neurodegenerative diseases. Conclusion: Understanding the role of epigenetics in neurodegenerative diseases offers insights into disease development and progression. It provides opportunities for the development of potential therapeutic strategies that target epigenetic modifications. However, studying epigenetic changes in neurodegenerative diseases presents challenges, including the complexity of epigenetic regulation and the heterogeneity of the diseases. Nonetheless, the therapeutic potential of epigenetic regulation in neurodegenerative diseases is promising, with potential strategies including DNA methylation modifiers, histone deacetylase inhibitors, microRNA-based therapies, lncRNA modulation, and epigenetic diets. Continued research is needed to further understand the underlying mechanisms and develop safe and effective treatments for neurodegenerative diseases.