Mitochondrial fusion is a process by which individual mitochondria in a cell merge together to create a single, larger mitochondrion. This process plays a crucial role in maintaining the functional and structural integrity of mitochondria, as well as cell health and overall metabolism. Dysregulation of mitochondrial fusion has been implicated in various human diseases, including neurodegenerative disorders, metabolic disorders, and cancer. Research in this area aims to understand the molecular mechanisms underlying mitochondrial fusion, its regulation, and its impact on cellular function and disease pathology. Additionally, efforts are being made to develop potential therapeutic interventions targeting mitochondrial fusion for the treatment of various diseases.