In a new interview, Olivia Newton-John opens up about her third battle with cancer. She's a fighter, she's been here before in 1992 and in 2013. The 69 year-old actress said she plans to fight it again with a mix of “modern” medicines and natural remedies, including cannabis oil. Newton-John’s cancer is reportedly in stage four. But she remains optimistic in her battle. Let's keep her in our prayers.