In a very personal letter posted on GMA's website, Roberts explained that her previous cancer treatment caused her current condition. "My doctors tell me I'm going to beat this – and I know it's true," she writes. Despite frightful statistics online, Roberts' doctors say they don't apply to her. She's younger and fitter than most diagnosed with the disease.
Roberts also announced she would be starting chemotherapy pre-treatment today. Later this year she will undergo a bone marrow transplant thanks to her perfect match sister, which improves her chances for a cure dramatically. "Bone marrow donors are scare and particularly for African-American women," Roberts explained. "Many people don't realize they can be bone marrow donors. I encourage everyone to sign up on a donor registry like bethematch.org."
Despite her current diagnosis, Roberts will continue to anchor GMA, but will miss a good "chunk" of time later this year for the transplant.
"When I faced breast cancer, your prayers and good wishes sustained me, gave me such hope and played a major role in my recovery," she wrapped up in her letter. "In facing this new challenge, I ask humbly for more of your prayers and love – as I will keep your in mine and update you regularly on my condition."
Leave your well wishes for Robin Roberts below.