Munn urged others to take the free, online risk assessment that she credits with saving her and her mother's lives.

Olivia Munn has revealed her mother has been diagnosed with breast cancer, more than a year after the actress shared her own cancer diagnosis.

The 'Your Friends & Neighbors' star said she and her mom were there for each other for both of their double mastectomy surgeries: "There's something about watching a loved one go through it that is even more heartbreaking.