Robin Roberts' bone marrow transplant announcement saving lives …

Robin Roberts appeared on Good Morning America today and thanked viewers for their support. The anchor is intent on battling through a blood disorder.

Good Morning America co-host Robin Roberts says she has myelodysplastic syndrome caused by chemotherapy for her breast cancer.

Robin Roberts (center) is joined by her sister Sally-Ann Roberts (right Phillips Co-anchor Robin Roberts returned to the set of "Good Morning America" on

Robin Roberts, the "Good Morning America" co-host who landed the historic gay marriage interview with President Barack Obama, has been diagnosed with MDS, or myelodysplastic syndrome, a blood and bone-marrow

An emotional Robin Roberts announced on Monday that she has been diagnosed with a rare blood and bone-marrow disorder called MDS, and will undergo a bone marrow transplant. Speaking on "Good Morning America"