Montell Jordan is celebrating a major health victory, but the road to recovery was far more volatile than fans initially realized. The '90s R&B star, who confirmed he was cancer-free in December, has revealed new details about the "aggressive" return of the disease that tested his faith and forced a total lifestyle overhaul.

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Catherine O'Hara died from a pulmonary embolism, but her death certificate also revealed she was diagnosed with rectal cancer.

Diagnoses in people younger than 55 have nearly doubled since 1995.

Things have been a bit awkward since the cancer hospital announced two-and-a-half years ago that it was breaking its decades-long partnership with Brigham and Women’s Hospital and instead partnering with nearby rival Beth Israel Deaconess Medical Center.

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After being diagnosed with prostate cancer for a second time, Montell Jordan reveals that he’s now cancer-free. The “This Is How We Do It” singer and his wife opened up to PEOPLE about overcoming the difficult journey and how they’re moving forward.