Epigenetics has become a crucial field in understanding cancer progression. Unlike genetic mutations, which alter the DNA sequence, epigenetic changes affect how genes are turned on or off without changing the underlying DNA code. These modifications can be caused by environmental factors, lifestyle choices, or even inherited traits. In cancer, abnormal epigenetic changes can lead to the activation of oncogenes or the silencing of tumor suppressor genes, contributing to uncontrolled cell growth. Research into epigenetic therapies is exploring how to reverse these changes, potentially offering new treatment options for cancers that are resistant to traditional therapies. Understanding epigenetics also opens new possibilities for early detection and preventive strategies.