Olivia Munn reveals her mom has breast cancer after actress beat her own battle with deadly disease

Olivia Munn’s mother, Kim Munn, is fighting breast cancer just a year after the actress beat her own battle with the deadly disease.

“After my own breast cancer diagnosis in 2023, I urged my mother and sister to take the Breast Cancer Lifetime Risk Assessment test,” the “Newsroom” alum, 45, began in a post via Instagram Wednesday.

“My mother scored 26.2%. Her yearly mammogram had just come out clear but because of that high score I insisted she get an MRI. Shortly after that MRI, my mother was diagnosed with Stage 1 Her 2 breast cancer.”

Olivia shared that her mom has completed 12 rounds of chemotherapy to date and will continue transfusions for Herceptin, a targeted therapy drug used to treat breast cancer, until the fall.

“From my mom being there after my double mastectomy to me being there after hers. From me having to find an oncologist, to my mom and I sharing one. I can tell you this: going through cancer is really hard,” the “Your Friends & Neighbors” star admitted.

“But there’s something about watching a loved one go through it that is even more heartbreaking.”

Olivia said she has been spending “many nights” taking care of Kim when the “chemo became too much,” wishing she could “fight the fight for her” instead.

“It’s no small feat to realize you can’t do it for them,” the “Predator” star pointed out.

“To anyone out there who is taking care of someone or has made it their profession to do so, thank you. These fights can feel near impossible without you.”

Olivia included in her post Wednesday a photo of her and her mom at a doctor’s appointment, her husband, John Mulaney, paying a visit, a video of Kim cooking shortly after her surgery, a throwback pic, among other special moments.

In a special tribute to Kim, the “New Girl” alum wrote, “I want to say how proud I am of my mom. She’s handled all of this with bravery and humor while still driving us crazy (just days after her double mastectomy she tried to do laundry and make dinner- she’s insane.)”

Olivia also provided a series of tips for early detection, including getting a free Tyrer-Cuzick Risk Assessment test and asking doctors for a breast MRI.

She added, “My mom wanted me to tell you that she hopes by sharing her story it will help save someone’s life.”

Olivia was diagnosed with breast cancer in April 2023. She secretly underwent treatment and a double mastectomy in the months that followed before revealing her health journey in March 2024.

“I went from feeling completely fine one day, to waking up in a hospital bed after a 10-hour surgery the next,” the “X-Men: Apocalypse” star wrote via Instagram at the time.

She thanked Mulaney, 42, for “being there before” when she “went into each surgery” and “woke up, always placing framed photos of [their] little boy Malcolm so it would be the first thing [she] saw.”