Bone Marrow Transplantation (BMT) involves the administration of high doses of chemotherapy, immunosuppressive medications, and infusion of marrow cells. During and after treatment, patients may develop a poor appetite, mucositis, anorexia and gastrointestinal failure which severely affect the food intake and leads to malnutrition (1, 2). It is important to follow dietary guidelines for post bone marrow transplant patient to improve or maintain nutritional intake. The dietary approach varies from patient to patient based on their condition. This case report explains the crucial role of a dietitian to improve the nutrient intake and nutritional status of the post bone marrow transplant patient.