The 71-year-old told how the herbal treatment has helped contain the stage four disease, which returned three years ago in her lower back, but Olivia looked fit and healthy as she appeared on the red carpet with her former Grease co-star John Travolta, 65, at the G’day gala in Beverly Hills on Saturday.
The actress and singer said: “My tumours are receding or they’re going away or they’re staying the same. On stage four metastatic breast cancer that’s pretty amazing. I don’t see it as a battle. I am winning.”
Olivia is pushing for the wider use of cannabis as a medicine. She added: “For me, the proof is in the pudding and I’m the pudding.
“If I hadn’t had the experience I’m having with cannabis I wouldn’t be able to talk about it.”
The mum-of-one’s Cancer & Wellness Centre in her native Australia is launching trials of cannabis as a medicine. She has also lobbied the government there to approve its use.