A stem cell transplant is a medical procedure that replaces damaged or diseased bone marrow with healthy stem cells. These stem cells can develop into different types of blood cells, helping the body produce new, healthy blood. This treatment is often used for conditions like leukemia, lymphoma, and certain genetic disorders. There are two main types of stem cell transplants: autologous, where a patient’s own stem cells are used, and allogeneic, where stem cells from a donor are used. The goal is to restore the body’s ability to produce blood cells and improve overall health.