Olivia Munn’s Breast Cancer Risk Assessment – What It Is and What It Means for You
- Jennifer Thompson, MS, CGC
- Jun 11, 2025
- 6 min read
The other night, I was on the phone with my mom when she brought up a segment she’d just seen on Meet the Press.
“Did you hear Olivia Munn had breast cancer?” she asked. “She said a free test called the breast cancer risk assessment showed she was high risk, and that’s how they found it.”
My mom knows what I do – I’m a genetic counselor – so of course this piqued her interest. But she had one big question:
“What was the breast cancer risk assessment she took?”
It turns out Olivia Munn was referring to something she called a Lifetime Risk Assessment, which helped identify her as high-risk for breast cancer and led to an MRI that ultimately detected her breast cancer early.
If my mom didn’t know what that test was, I realized that lots of other women might be wondering the same thing.
So in this post, we’re going to break it all down:
What Olivia Munn’s “breast cancer lifetime risk assessment” really is
How it works – and what it can and can’t tell you
How does it compare to genetic testing and genetic counseling?
And how to know what kind of breast cancer risk assessment is right for you
Let’s get into it.
What Is the “Breast Cancer Risk Assessment” Olivia Munn Took?
In her Meet the Press interview, Olivia Munn shared that her doctor recommended a breast cancer risk assessment. Her results came back showing she had a 37% lifetime risk of developing breast cancer – much higher than average risk (12%). Based on that number, her doctor ordered a breast MRI, which detected her cancer.
The tool she likely used is called the Tyrer-Cuzick model. This is a breast cancer risk model – not a genetic test.
What does the Tyrer-Cuzick model do?
It estimates your lifetime risk of developing breast cancer using information like:
Your age
Height and weight
Age at first period and menopause
Whether or not you’ve had children
Personal history of benign breast conditions
And a partial family history of breast and ovarian cancer
You plug in your information, and the model gives you a percentage estimate of your lifetime breast cancer risk.
For example:
👉 The average woman has about a 12% lifetime risk of developing breast cancer.👉 If your score is 20% or higher, you are considered high-risk.
If you are at high-risk to develop breast cancer, the following may be recommended:
Earlier breast cancer screening
Additional screening with breast MRI
Genetic counseling or genetic testing
More personalized prevention and screening plans
Identifying elevated breast cancer risk earlier can create more opportunities for prevention, enhanced screening, and early detection.
Why Experts Recommend Breast Cancer Risk Assessment Starting at Age 25
Several major medical organizations now recommend that women undergo a breast cancer risk assessment at age 25.
The American College of Radiology (ACR), Society of Breast Imaging, American Society of Breast Surgeons, and National Comprehensive Cancer Network (NCCN) all support early breast cancer risk assessment to help identify women who may benefit from earlier or enhanced screening.
Why age 25?
Because for women identified as high-risk, additional breast cancer screening — such as annual breast MRI screening — may begin as early as age 25. This is 15 years before routine mammogram screening typically starts for average-risk women.
The goal is to identify women at elevated risk earlier, before cancer develops, when there may be more opportunities for prevention, increased surveillance, and early detection.
And for women found to be at elevated risk, this often leads to referral to a high-risk breast clinic or genetics professional for a more comprehensive breast cancer risk assessment and personalized screening recommendations.
Limitations of the Tyrer-Cuzick Breast Cancer Risk Assessment
Risk models are helpful, but no model is perfect. Here’s what to keep in mind:
It’s an estimate, not a prediction. It can’t tell you if you will or won’t get breast cancer.
It may overestimate or underestimate your risk for breast cancer.
It doesn’t capture all risk factors, like diet, exercise, or lifestyle.
It only looks at breast cancer, not your risk for ovarian, colon, or other types.
It only partially accounts for family history of cancer. For example, it doesn’t ask about cancers beyond breast or ovarian.
It was developed based on mostly white European populations, so it may not be as accurate for people of other ancestries.
So while it’s a useful tool, it’s not a full picture – especially if you have a family history of multiple types of cancer or are wondering about your inherited risk.
What a Comprehensive Breast Cancer Risk Assessment Looks Like
While tools like the Tyrer-Cuzick model are an important part of breast cancer risk assessment, they’re only one piece of a more complete evaluation.
In many cases, women identified as high-risk are referred to a high-risk breast clinic or genetics professional for a more comprehensive assessment of their breast cancer risk.
A comprehensive breast cancer risk assessment may include:
A detailed review of your personal medical history
A multi-generational family history review
Evaluation for hereditary cancer syndromes
Assessment of whether genetic testing may be appropriate
Calculation of breast cancer risk using models like Tyrer-Cuzick
Personalized screening and prevention recommendations
The goal isn’t just to generate a risk score.
It’s to help create a more personalized plan for breast cancer screening, prevention, and next steps.
How Genetic Testing Identifies Inherited Risk
While the Tyrer-Cuzick breast cancer risk assessment looks at your risk factors, genetic testing looks directly at your DNA to find inherited gene mutations that increase your cancer risk.
This is how people find out they have a BRCA1 or BRCA2 mutation – the same genes that were made widely known by Angelina Jolie, and that can raise your lifetime breast cancer risk to as high as 72% and increase your risk for certain other cancers as well.
But BRCA genes are just the beginning. Today’s genetic panels can also look at mutations in dozens of other genes linked to cancers like:
Ovarian cancer
Uterine cancer
Colon and rectal cancers
Pancreatic cancer
Prostate cancer
Melanoma
Kidney, thyroid, and more
Why does this matter?
Because:
Most people who carry these mutations don’t know it.
You can’t tell just by family history. Studies have shown that between 25-50% of people with an inherited mutation don’t have a “strong” family history.
Knowing your genetic risk for breast cancer gives you options for earlier screening, more frequent monitoring, and even risk-reducing strategies
Genetic testing gives you a clearer picture of your inherited cancer risk – identifying gene mutations you may have been born with. Risk models like Tyrer-Cuzick Breast Cancer Assessment help us understand how other factors impact your overall breast cancer risk. But the most complete picture comes when both are used together – in the context of a full genetic counseling assessment.
The Role of Genetic Counseling in Breast Cancer Risk Assessment
This is where we come in.
As genetic counselors, we’re trained to look at your personal health history, your full family history, and any available test results or models – like Tyrer-Cuzick Risk Assessment – and interpret them together.
We can help answer:
Should I get genetic testing?
What kind of testing makes the most sense?
Should I be getting MRIs? When should I start screening?
Am I missing something in my family history?
At HealthyGene, we offer a 30-minute Personal Risk Assessment designed to answer those questions. It includes:
An in-depth review of your personal and family history
An assessment of your cancer risk (using tools like Tyrer-Cuzick Breast Cancer Risk Assessment when appropriate)
A clear, expert recommendation on next steps – from testing to screening
It’s designed for women who want proactive, preventive care – and who want to feel confident they’re not missing something important.
Not Sure If Genetic Counseling Is Right for You?
That’s exactly why we created the Know Your Risk Quiz.
It’s a free, 5-minute quiz that helps you understand if your personal and family history might point to inherited cancer risk – across multiple types of cancer, not just breast.
While the Tyrer-Cuzick Breast Cancer Risk Assessment is designed to estimate your overall risk for breast cancer, our quiz focuses on your inherited risk across multiple cancer types.
It's a great first step – especially if you’re wondering whether genetic counseling or testing is something you should explore.
It’s private, quick, and gives you immediate next steps.
Final Thoughts
Olivia Munn’s story is a powerful reminder of how important it is to take your breast cancer risk seriously – and how much of a difference knowing your risk can make.
Risk models like Tyrer-Cuzick can help identify women who may be at increased risk for breast cancer. Genetic testing can help identify inherited cancer risk. But neither tells the whole story on its own.
If you want a clear, complete picture of your risk – and a plan that fits you – a comprehensive breast cancer risk assessment with a genetic counselor is the best place to start.
And if you’re not sure you're ready to see a genetic counselor?
Start with the Know Your Risk Quiz.
You deserve answers. We’re here to help you find them.
