Asian Journal of Advanced Research and Reports

Brain disorders represent a major global health burden, encompassing neurodegenerative, neuropsychiatric, and neurodevelopmental conditions. Increasing evidence highlights the crucial roles of epigenetic regulation, neuropharmacological mechanisms, and biochemical modifications in the onset and progression of these disorders. Epigenetic processes such as DNA methylation, histone modification, and non-coding RNA regulation dynamically modulate gene expression without altering DNA sequences and are profoundly influenced by environmental factors. Neuropharmacology provides insight into how drugs interact with neural systems to modify neurotransmission, behavior, and cognition. Furthermore, biochemical alterations including oxidative stress, neuroinflammation, mitochondrial dysfunction, protein aggregation, and neurotransmitter imbalance critically disrupt neuronal homeostasis. This review comprehensively discusses the interplay between epigenetics, neuropharmacology, and biochemical modifications in brain disorders, emphasizing molecular mechanisms, disease implications, current research techniques, and emerging therapeutic strategies. Understanding these interconnected pathways may facilitate the development of targeted, personalized, and disease-modifying treatments for neurological and psychiatric disorders.