Monday, 5th August 2019, 8:54 pm
Updated Friday, 6th September 2019, 4:25 pm
The English-Australian actress and singer said that using cannabis drops from plants grown by her husband at their home in California, where the drug is legal, had also relieved symptoms such as sleeplessness and anxiety.
In an interview with 60 Minutes Australia, the 70-year-old star of films such as Grease and Xanadu said: âI really believe the cannabis has made a huge difference.
âIf I donât take the drops I can feel the pain, so I know itâs working.â
Her husband, John Easterling, said that Newton-John had used cannabis only once before, having tried it once in the 70s and deciding she did not want to do it again.
He said he had played a role in encouraging her to try it for medicalÂ reasons.
âI was highly confident up front, but inside I was nervous,â he said.
I took cannabis oil to help me sleep on a plane â and to demonstrate how ludicrous the UKâs law is
Ms Newton-John said that despite her stage-four diagnosis she felt death was âa long way awayâ.
She said: âI see it as something in my body that Iâm getting rid of.
âI donât talk about a battle or a war because I think that sets up that kind of feeling in your body of youâre bottling something strange inside you. I let it go.â
She said she had no interest in knowing how long doctors thought she might live. âI donât read statistics. If you believe the statistics, youâre going to make them happen. If somebody tells you, âYou have six months to liveâ, very possibly you will because you believe that.â
Newton-John and her family are now campaigning for medical cannabis to be legalised in Australia.
The Olivia Newton-John Cancer Wellness and Research Centre in Melbourne is seeking funding for clinical trials on medicinal marijuana â and the actress will be selling many of her personal belongings in an auction in Beverley Hills in November.
The iconic black trousers and leather jacket she wore in the 1978 high school hit Grease are among the items, alongside a pair of white and gold lamĂ© shorts and top that she wore to promote her 1981 albumÂ Physical.
Newton-John told 60 Minutes that she was enjoying spending time with family and friends at her home in the hills of Santa Barbara.
She said: âIâm so lucky that Iâve been through this three times and Iâm still here. Iâm living with it. Every day is a gift now, particularly now.â
As well as medical marijuana, Newton-John is also treating her illness with Amazonian herbs alongside conventional remedies.
Newton-John was diagnosed with breast cancer in 1992 and underwent a partial mastectomy, chemotherapy and breast reconstruction. The cancer returned in 2013 and again in 2017 when it spread to her bones.