Welsh TV presenter Mari Grug has shared her deeply moving journey with metastatic breast cancer in a new S4C documentary Mari Grug: Un dydd ar y tro (One Day at a Time). Diagnosed in 2023 at the age of 38, Mari’s cancer has since spread to her lymph nodes and liver—but her spirit remains unbroken.
Known for her work on Heno and Prynhawn Da, Mari explained that her goal is to show the public that “life can go on even though I have metastatic breast cancer.” Through the documentary, viewers will see her undergoing treatment, facing emotional and physical challenges, but also cherishing precious family moments with her three children.
She said she was initially told “there isn’t much we can do” and that palliative care was her only option. But instead of giving up, she decided to fight. “People think of palliative care as end-of-life care,” she said, “but in reality, this kind of care has developed significantly.”
Mari admitted she felt like she had to “become the production manager of my own illness” to ensure doctors considered her as an individual and not just a statistic. “I was 38, a mother to three small children, and I just wanted to feel like they were going to do everything possible to help me,” she added.
Her motivation now comes from her children. “When you hear that you have a condition that’s going to end your life sooner than you’d like, every extra year is a gift,” she shared. “I just want to see my children reach the milestones in their lives. I’m trying to show them that life is still valuable, even with a diagnosis like this. I’m ill, but I’m still here—and we’re going to make the most of every moment.”
Macmillan Cancer Support’s breast cancer lead for Wales, Marguerite Holloway, praised Mari as “an inspiration,” saying her openness and courage have brought much-needed awareness to the realities of living with secondary breast cancer.
