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Olivia Munn revealed she was recognized with breast most cancers in 2023 and selected to maintain the information personal for a 12 months.
In an open letter shared on Instagram in March 2024, the previous The Newsroom star detailed how her luminal B most cancers was found and defined why she determined to maintain the knowledge personal till now. Since then, Olivia has been protecting followers up to date on her journey, aiming to boost consciousness about this kind of most cancers, which is the most typical type of most cancers in ladies in the US, excluding pores and skin cancers. It accounts for about 30% (or 1 in 3) of all new feminine cancers every year.
Get an replace on Olivia’s well being and study extra about her breast most cancers prognosis under.
Olivia Munn Was Identified With Luminal B Most cancers
On March 13, 2024, the X-Males: Apocalypse star recollected the second when her most cancers was found in an Instagram publish.
“In February of 2023, in an effort to be proactive about my well being, I took a genetic check that checks you for 90 totally different most cancers genes,” Olivia started.”Two months later, I used to be recognized with breast most cancers. … Up to now ten months, I’ve had 4 surgical procedures, so many days spent in mattress I can’t even depend…surprisingly, I’ve solely cried twice. I’ve tended to let individuals see me when I’ve power, after I can dress and get out of the home, after I can take my child boy to the park. I’ve saved the prognosis and the fear, and the restoration and the ache drugs, and the paper robes personal.”
Olivia’s purpose for withholding the most cancers prognosis from the general public was as a result of she “wanted to catch [her] breath and get by means of a few of the hardest elements earlier than sharing.”
“I wouldn’t have discovered my most cancers for an additional 12 months — at my subsequent scheduled mammogram — besides that my OBGYN, Dr. Thais Aliabadi, determined to calculate my breast most cancers threat evaluation rating,” Olivia continued, including, “The truth that she did saved my life.”
After wanting by means of numerous features resembling household most cancers historical past and giving delivery to a baby over the age of 30, the physician decided that Olivia’s “lifetime threat” was 37 %.
“Due to that rating, I used to be despatched to get an MRI, which led to an ultrasound, which then led to a biopsy,” Olivia defined. “The biopsy confirmed that I had luminal B most cancers in each breasts. Luminal B is an aggressive, fast-moving most cancers. Thirty days after that biopsy, I had a double mastectomy. I went from feeling utterly wonderful in the future to waking up in a hospital mattress after a 10-hour surgical procedure the following.”
Olivia additionally famous that she is “fortunate” as a result of she and her physician “caught it with sufficient time that [she] had choices.” On the finish of her message, Olivia famous, “I need the identical for any lady who may need to face this in the future.”

What Is Luminal B Most cancers?
In response to Metropolis of Hope’s cancercenter.com, luminal B is “expresses estrogen or progesterone (or each) hormone receptors (HR)” and “doesn’t specific human epidermal development issue receptor 2 (HER2) proteins.”
The web site additionally notes that the 2 varieties of breast most cancers, luminal A and B, differ as a result of B “expresses the HER2 protein, which can quicken the expansion of most cancers cells. In consequence, luminal B breast most cancers is often extra aggressive and receives the next grade and a poorer prognosis than luminal A.”
How Is Olivia Munn Doing Now?
Olivia has undergone a number of surgical procedures, together with a double mastectomy and hysterectomy. She additionally went by means of hormone suppression remedy and froze her eggs.
Alongside her well being journey, Olivia has been elevating her two kids along with her husband, John Mulaney. The couple welcomed their son, Malcolm Hiệp Mulaney, in November 2021, earlier than her breast most cancers prognosis. They later expanded their household with the arrival of their second little one, daughter Méi June Mulaney, in September 2024 through surrogate.
In February 2025, Olivia shared that whereas she nonetheless has “years to go” in her breast most cancers remedy, she’s feeling wholesome. At TIME’s Ladies of the 12 months gala, Olivia proposed a toast “to good well being [and] to wholesome days,” and shared a touching story about her daughter Méi, who had been affected by “quite a lot of discomfort” and abdomen pains. Trusting her “mom’s instinct,” Olivia switched Méi’s formulation, and inside hours, her daughter began feeling higher.
“It’s one among my most proud moments as a mom,” Olivia mentioned. “She was smiling and he or she was wholesome, after which I spotted that I’d felt fairly good all day too. I’ve years to go in my most cancers remedy, however on that Friday my joints didn’t ache, and I wasn’t too scorching or too chilly from going right into a surgical menopause, and my mind fog had cleared, not less than for that day anyway … As I held my daughter, I used to be so grateful that I used to be wholesome sufficient to see each minute of all of it.”
Regardless of her well being challenges, Olivia has attended a number of public occasions over the previous couple of years. She was on the 2024 Oscars in Los Angeles, simply days earlier than asserting her most cancers prognosis, and has walked crimson carpets with John, together with on the SNL 50: The Anniversary Particular.