Olivia Munn shares how a risk assessment test led to her mom’s early HER2 breast cancer diagnosis Read ahead to know why risk assessment matters and how it can save lives

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

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.