Olivia Newton-John says she has been diagnosed with cancer for the third time in three decades. The "Grease" star says for pain, she is taking cannabis oil, made from marijuana her husband grows in California. She has undergone radiation treatments and has cut sugar out of her diet. Newton-John was first diagnosed with breast cancer in 1992, undergoing a partial mastectomy and reconstruction. She was diagnosed with breast cancer again in 2013.

Source: ABC News September 10, 2018 15:09 UTC