Olivia Munn is opening up about her mom's breast cancer diagnosis. The "Your Friends and Neighbors" star, 45, took to Instagram on Wednesday and revealed that her mom was diagnosed with Stage 1 HER2 breast cancer after Munn's own breast cancer diagnosis in 2023.

After Olivia Munn was diagnosed with breast cancer in 2023, she urged her mom and sister to take a risk assessment test.

Olivia Munn and her mothers breast cancer journey highlights the importance of using breast cancer risk assessment tools like the Tyrer-Cuzick Risk Model a widely accessible and potentially life-savin