Former President Joe Biden is undergoing radiation therapy and hormone treatment as part of a treatment plan for prostate cancer, a spokesperson told CBS News.

Biden was diagnosed with an "aggressive form" of prostate cancer in May 2025. According to a statement from his office at the time, the former president was diagnosed with "prostate cancer, characterized by a Gleason score of 9 (Grade Group 5) with metastasis to the bone" after a small nodule was found in the prostate.

Gleason scores are a grading system, and the lower the grade, the more cancer cells look like normal cells. A score of 9 is the second-highest, CBS News previously reported , and places Biden in the most aggressive risk category.

Prostate cancer is the second-most common cancer that affects men, according

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