Environmental Epigenetics and Its Impacts on Disease Susceptibility: A Comprehensive Review

Abstract

Environmental epigenetics, an emerging field, investigates the interplay between environmental factors and epigenetic changes, shaping an individual's disease vulnerability. This review highlights the associations among genetics, environment, and health. Environmental epigenetics significantly impacts disease susceptibility through mechanisms like non-coding RNAs, histone modifications, and DNA methylation, responding to external stimuli and dynamically interacting with genes. Lifelong epigenetic imprints, influenced by the prenatal environment, early experiences, diet, chemical exposures, and lifestyle, dictate health trajectories across the lifespan, elevating the risk of various illnesses, including cancer, cardiovascular, metabolic, and neurological conditions. Major findings demonstrate how antenatal environmental factors—like mother's diet, food and stress level—shape fetal epigenetic programming and impact health consequences in the future. Furthermore, it has been demonstrated that environmental pollutants and dietary nutrients can modify epigenetic markers, highlighting the crucial role that lifestyle decisions have in reducing the risk of disease. Significantly, the notion that epigenetic alterations may be passed down through generations raises the possibility that environmental exposures may have an impact on health consequences for future generations. Environmental epigenetics revolutionizes our understanding of gene-environment interactions and their role in disease etiology. The study concludes by highlighting the revolutionary implications of environmental epigenetics for comprehending the etiology of disease and customizing public health approaches, and by promoting the incorporation of both genetic and environmental components within public health frameworks. The knowledge acquired calls for an evolution of paradigms in medicine toward customized care utilizing epigenetic biomarkers and calls for more studies to improve therapies that lessen the harmful epigenetic consequences of exposure to the environment.