Olivia Munn's Shocking Wake-Up Call: "I Had No Symptoms" — How a Routine Test Saved the Actress's Life

When actress Olivia Munn walked into her OB/GYN's office for a routine annual checkup in 2023, she felt completely fine. No lumps. No pain. No warning signs whatsoever. What happened next, she says, changed her life — and may change yours too.

Her doctor performed a breast cancer risk assessment called the Tyrer-Cuzick model — a calculation that factors in a woman's age, genetics, family history, hormonal history, and breast density to estimate her lifetime risk. Munn's score came back at 37%. Any score above 20% is considered high risk and triggers immediate additional screening. Most women never receive this test at all.

"I would have never found it otherwise," Munn, 44, told People Magazine. "I felt completely healthy. I had no symptoms at all. This test — this risk assessment — is the reason I'm still here."

A Diagnosis Nobody Saw Coming

Following the elevated risk score, Munn underwent an MRI which revealed Luminal B breast cancer — an aggressive subtype that accounts for roughly 20% of all breast cancer diagnoses and is known for being faster-growing than most hormone-driven cancers.

Within 10 months of that initial risk assessment, she underwent four surgeries, including a double mastectomy and breast reconstruction. Surgeons removed 30 lymph nodes — three tested positive. Radiation therapy followed. Today, Olivia Munn is cancer-free.

The Test Most Women Have Never Heard Of

The Tyrer-Cuzick Risk Assessment Tool was developed by cancer researchers at the University of Manchester and is now widely used by oncologists across the United States. Despite its effectiveness, it is rarely administered as part of standard annual checkups.

Since going public, Munn has appeared on Good Morning America, The Drew Barrymore Show, and multiple health advocacy platforms urging all women to ask their doctors about this screening.

A Message Every Woman Needs to Hear

In a post shared to her Instagram, Munn wrote: "Please ask your doctor about the Tyrer-Cuzick assessment. I know it sounds scary but knowing is everything. Not knowing is what's truly dangerous."

Dr. Elisa Port, Chief of Breast Surgery at Mount Sinai Health System, called Munn's advocacy "genuinely life-saving." The American Cancer Society estimates 1 in 8 women in the United States will develop breast cancer in their lifetime. For Munn, the message is simple: "One test. Five minutes. It saved my life."

Sources: People Magazine, American Cancer Society, Mount Sinai Health System, @oliviamunn Instagram, The Drew Barrymore Show, Healthline. Informational purposes only — not medical advice.