Olivia Newton-John has revealed that she is battling her third cancer diagnosis, opening up for the first time about a 2013 diagnosis that she had previously decided not to make public.

Newton-John, who will turn 70 this month, was originally diagnosed with the disease in 1992, but was later proclaimed cancer free after receiving chemotherapy and a partial mastectomy. However, last May, the singer announced via a statement on her website and Facebook page that the cancer had returned and that she'd be canceling tour dates due to back pain, which was an effect of the breast cancer that had metastasized to her sacrum.

As it turns out, the 1974 CMA Female Vocalist of the Year had already faced the 2013 diagnosis, which was in her shoulder, having moved up from her breast. However, at that time, Newton-John, who had just lost her sister earlier that year to brain cancer, kept the news private.

In an interview with Sunday Night, Newton-John said that she and her husband are exploring both traditional and natural medicinal approaches, including dietary changes and cannabis oil, to fight the current iteration of her disease. She says things are going well so far: "I believe I will win over it and that’s my goal," she told the outlet.

Newton-John does, however, admit to being afraid at times. "There are moments. I’m human," she told the show.

Watch the full interview with the singer below:

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