Life Olivia Newton-John gives advice to Alex Trebek after his cancer diagnosis: ‘Stay focused’ March 12, 2019Hannah Yasharoff, USA TODAYComments Off on Olivia Newton-John gives advice to Alex Trebek after his cancer diagnosis: ‘Stay focused’ After Alex Trebek announced last week he had been diagnosed with stage 4 pancreatic cancer, Olivia Newton-John offered some words of encouragement.