Listen to the story of Rachel Pereira, who defeated ovarian cancer by focusing on the positive side of the journey rather than thinking about her life’s negatives. ZenOnco.io - Making quality integrative oncology cancer care accessible to all. If you or your loved one has been diagnosed with cancer recently, and need guidance on treatment or have any doubts or queries, please call ZenOnco.io on +91 99 30 70 90 00.