Olivia Newton-John is "feeling good" amid her ongoing cancer battle

In an interview with America's Closer Weekly magazine, Olivia said: "My husband makes me tinctures that help immensely with pain, inflammation, sleep and anxiety.

"I'd like to research all that and find out what else is going on because I feel good."

Olivia revealed that she takes "a lot of herbs" for her breast cancer – which she was first diagnosed with in 1992 – in addition to conventional treatments like radiation.

The 72-year-old star said: "There are a lot of herbs I take. And over the last 10 years, I've used cannabis.

"I've also been eating vegan because my daughter (Chloe Lattanzi) was visiting me and she's a vegan. I feel very good."

Olivia also expressed hope that she will live to see a "world beyond cancer".

The 'Physical' hitmaker said: "I'd like to see a world beyond cancer.

"I think I've accomplished everything I dreamt of and more, and I'm so grateful for that. I want to be able to give back and help other people going through cancer. I don't think it can get more important than that."

The star also explained that finding different ways to treat cancer is one of the main aims of the Olivia Newton-John Foundation.

She said: "After having lived for years with different cancers, and having surgery, chemotherapy and radiation, I thought it would be wonderful if we could find different kinds of treatments for people going through cancer."