Stem cell transplant is a medical procedure used to replace damaged or diseased cells in the body with healthy stem cells. Stem cells are unique cells that have the ability to develop into different types of cells in the body, making them valuable in treating a variety of diseases and conditions. There are different types of stem cell transplants, including autologous transplants (using the patient's own stem cells) and allogeneic transplants (using stem cells from a donor). Stem cell transplants are commonly used in the treatment of blood disorders, such as leukemia and lymphoma, as well as certain types of solid tumors, autoimmune diseases, and genetic disorders. The process of a stem cell transplant involves harvesting stem cells from the patient or a donor, conditioning the patient's body through chemotherapy or radiation to destroy existing unhealthy cells, and then infusing the healthy stem cells into the bloodstream. These stem cells then migrate to the bone marrow and begin to produce new, healthy blood cells. Stem cell transplant can be a complex and intensive treatment with potential risks and complications, but it can also offer a chance for long-term remission or cure for certain diseases. Research in stem cell transplant continues to advance, with ongoing efforts to improve outcomes, reduce complications, and expand the use of this treatment to more conditions.