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OTRC: Robin Roberts takes time off from 'Good Morning America' before medical leave

Robin Roberts appears on 'Good Morning America' on July 18, 2012 and July 25, 2012, wearing an armband. (Ida Mae Astute)

Robin Roberts has taken some time off from ABC's "Good Morning America" ahead of her scheduled medical leave as she prepares for a bone marrow transplant to treat myelodysplastic syndrome, a blood disorder.

The 51-year-old co-host said on Tuesday that she was "not feeling too well" and later Tweeted that that day was her last one on the show "for a couple of weeks," adding: "Momma needs a vacation!" Roberts was absent from the show on Wednesday, August 1, and Amy Robach filled in for her.

She added on Wednesday morning that she was feeling MUCH better."

Roberts said at ABC's Television Critics Association panel in Beverly Hills, California last week that she expected to begin her medical leave and undergo her bone marrow transplant around late August or early September.

When asked if the purpose of her current time off was to prepare for her bone marrow transplant or was a vacation, she replied: "Actually it's both...thanks."

Roberts revealed her ailment in June, saying it was caused in part by treatments she had undergone for breast cancer five years ago. She has continued to appear on "GMA," often sporting colorful armbands, which cover her chemotherapy PICC (peripherally inserted central catheter) line treatments.

Roberts said at the panel that she had been feeling tired lately but that hearing about improved ratings for "Good Morning America" had energized her and has been "pretty good medicine."

ABC News Senior Executive Producer Tom Cibrowski, who also appeared with the "GMA" stars, Tom Cibrowski said at the time that ABC personalities would fill in for Roberts while she was on medical leave. He mentioned Diane Sawyer, who was a "GMA" co-host between 1999 and 2009, Kelly Ripa of "LIVE! with Kelly," the women of later show "The View" and Katie Couric.

Couric, a former "Today" show co-host and ex-CBS "Evening News" anchor, had filled in for Roberts while she went on vacation. The 55-year-old is launching her own talk show, "Katie," on ABC in September. She later appeared on stage to talk about her own project and praised Roberts.

"I think Robin's a remarkable person," Couric said. "This is a difficult time for her and I think for the entire show and so if I can be helpful and try to fill her shoes for a week or whatever, even while I'm doing [my] show, I want to do that."

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