Robin Roberts, who had surgery last month for breast cancer, was to begin chemotherapy Thursday.
Roberts, co-host of ABC's "Good Morning America," which airs from New York City, said during Wednesday's broadcast that she would first go into work "and then head off for my chemotherapy."
She announced on July 31 that she had been diagnosed with breast cancer. Roberts, 46, had surgery Aug. 3 and returned to work 10 days later.
Roberts, who grew up in Pass Christian, Miss., said after the successful surgery her doctors had determined that chemotherapy would be the most effective form of treatment. That will be followed by radiation treatment.
"I'll work as much as I can," Roberts said. "Part of the reason I am coming forward is in case you tune in and it looks like Kojak is sitting next to Diane (Sawyer), you'll understand why."
Roberts thanked viewers, co-workers and guests for their outpouring of well-wishes. She said some viewers even gave tips and ideas for dealing with the treatment.
"Somebody said eat a lot of bacon before I have chemo," she said. "I don't know about that one. That's a new one."