Robin Roberts attends the revealing of the 'Oscar's Red Carpet Live' hosts on 'Good Morning America' at ABC Studios on February 13, 2012 in New York City. (Photo by Janette Pellegrini/Getty Images)

NEW YORK (AP) — Five months after undergoing a bone marrow transplant, Robin Roberts is back on television in the morning.

Roberts said Wednesday she’d been waiting 174 days “to say this, good morning America.”

The morning-show host is recovering from MDS, a blood and bone marrow disease. She looked thin with close-cropped hair but was smiling broadly, back at work on “Good Morning America” at ABC’s studio in New York City.

ABC announced Roberts will interview first lady Michelle Obama later this week, to be shown next Tuesday.

Copyright 2013 The Associated Press.