Epigenetics, in the field of genetics, involves study of cellular and physiological trait variations initiated by external or ecological aspects which swipe genes on and off and affect how cells read genes contrary to being affected by changes in the DNA classification. It is responsible for skin cells appearing dissimilar as compared to brain cells or muscle cells. Epigenetics changes are influenced factors, such as age, surrounding environment, lifestyle, and disease state. If epigenetic changes occur in sperms or egg cells, it can be passed down to future generations. The three systems such as DNA methylation, non-coding RNA (ncRNA)-associated gene silencing, and histone modification are implemented to sustain epigenetics change. The recent studies discovering the significant role of epigenetics in treatment of various diseases presents new avenues in this market.