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From Hormones to Heroines: Couric, Cancer, and the Case for Change

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This episode of MedBuzz centers on change—reversals in long-standing warnings, the rise of precision testing, and the enduring influence of public advocacy. Dr John Marshall explores the shift in thinking around hormone replacement therapy (HRT), the new push for DPD testing with 5-FU and capecitabine, and the 25-year legacy of Katie Couric’s televised colonoscopy.

Released: December 15, 2025