The influence of epigenetic regulation on development of multifactorial diseases

Multifactorial diseases pose a growing challenge to global healthcare due to their rapidly increasing prevalence, high mortality rates, and significant contribution to disability among the working-age population. Intensive research aimed at improving early diagnosis, prevention, and treatment has underscored the critical role of epigenetic changes, which influence gene expression without altering the primary DNA sequence. This article provides an overview of the primary epigenetic mechanisms involved in gene expression regulation, including DNA methylation, post-translational histone modifications, and the role of non-coding microRNAs in gene silencing. Epigenetic factors serve as a bridge between the genome and environmental influences. Environmental risk factors—shaped by lifestyle, behavior, ecological exposures, and psycho-emotional stress—play a significant role in the phenotypic manifestations of diseases and overall human health. The reversibility of epigenetic mechanisms regulating gene expression can lead to both beneficial and adverse health outcomes. The continuous development of new technologies positions epigenetics as a promising field for functional research, with the potential to fundamentally transform therapeutic approaches to the treatment of multifactorial diseases.