When the female partner was the one with the serious illness or cancer, the chance of divorce was four times higher than when the male partner was the patient. If your relationship had strain before the diagnosis, talk to your partner, consider therapy, and build support — so you come through treatment together, stronger.
A couple of weeks ago, Sharon Stone shared something that stuck with me. She talked about the discord with her husband at the moment she was deciding whether to go forward with a bilateral mastectomy and reconstruction. Her takeaway was that he seemed upset about what was going to happen aesthetically — and he stormed out of the room. This was while she was processing genuinely life-altering medical information.
It's a heartbreaking story, and it raises a real, uncomfortable question: does a serious illness like breast cancer change the odds for a marriage? I went looking at what the research actually shows, and the answer is more nuanced — and more gendered — than you might expect.
There's an older study of about 500 patients with serious medical illness, including solid organ tumors, that looked at divorce rates. Overall, the divorce rate was about the same as the general population — maybe even slightly lower.
Except when the patient was a woman.
When the female partner was the one with the serious illness or cancer, the chance of divorce was four times higher than when the male partner was the patient.
That's a striking and frankly sobering finding. The serious illness itself didn't move the needle much overall — but who was sick did.
Now, an important caveat: there hasn't been a large population-based study in breast cancer patients specifically that has reproduced that same four-times effect. So I don't want to overstate it for breast cancer in particular.
What we do have is a meta-analysis of 15 different studies looking at divorce rates across cancer patients. That analysis found no difference from the general population — with one exception:
That one made me genuinely sad to read.
Digging into the data, a few specific factors show up again and again as associated with marital trouble after a new cancer diagnosis in women. If you recognize these in your own situation, it's worth paying attention to:
A couple of other data points stood out to me, because they speak to what happens after treatment, too:
So the gendered pattern isn't just about existing marriages — it appears to extend to forming new relationships afterward, too. It's a hard thing to sit with.
I know that when you're going through treatment for a life-altering medical problem, the last thing you want to think about is the health of your relationship on top of everything else. That's completely understandable.
But here's my gentle encouragement: if your relationship had strain before the diagnosis, or you have any of the risk factors above, it's genuinely worth being proactive. That might mean:
The goal is to come through the diagnosis and treatment together — stronger and more stable, not blindsided. The medical decisions, like whether to do a single or double mastectomy, what your reconstruction will look like, and why immediate reconstruction is often the right call, are things your surgical team will help you navigate. But the emotional and relational side deserves the same intentional care — and it's an area where the right support up front makes a real difference. (It's also part of why I care so much about how news like a diagnosis is delivered in the first place.)
Sharon Stone's story isn't just a celebrity headline — it reflects a real, data-backed pattern. When a woman is the one facing serious illness, the relationship strain is measurably higher, and breast cancer survivors face headwinds even in forming new relationships afterward.
If you're newly diagnosed and your relationship has any of the risk factors — younger age, pre-existing problems, financial stress, or a long road ahead — please don't ignore the relational side of your health. Talk to your partner. Get support. Consider therapy. You deserve to go through this with someone in your corner, and being proactive gives you the best shot at coming out the other side together.