When a parent has cancer: what happens in the family

“It’s nothing serious. They’ll cut it out and that’ll be that.”

Dad says it after Sunday lunch, while clearing the plates, as if he were reporting on a car repair. Mum stares into the sink. Their son, who has come over with his wife and two children, sits for a few seconds with his fork in his hand, then asks what exactly the doctor said. Dad waves it away: “The results are still to come.” And the conversation turns to the weather.

That night, at home, the son reads about types of tumour until one in the morning. Mum rings her daughter, who lives abroad, and tells her more than she told her son. Dad goes to bed early. Everyone in the family has heard the same news — and each of them has already begun carrying it in their own way.

When a parent gets cancer, one person falls ill. But the whole family gets the illness. This piece is not about treatment — talk to the doctors about that. It is about what happens between you after the diagnosis: who takes on which role, what you don’t say to each other, and how to stay close when everything is suddenly uncertain.

A diagnosis that hits the whole family

Researchers who study couples and families facing cancer have called it a we-disease. Karen Kayser and her colleagues showed that people with cancer do not cope only as individuals but within relationships: how the patient fares depends a great deal on whether the illness is carried together in the family or by each person alone. This isn’t just a nice thought. It means that conversation in the family is part of how the illness unfolds in everyday life.

It also means that distress is not reserved for the patient. Adult children often experience fear, sleeplessness, irritability and helplessness, but hide them because they feel they have no right to them — after all, they aren’t the ones who are ill. And among patients themselves, distress is more common than we think. A large meta-analysis by Alex Mitchell and colleagues, which combined 94 studies using clinical interviews, found that around 16% of people with cancer in hospital settings have major depression — roughly one in six. Depression in a parent with cancer is therefore not “understandable sadness to be endured”, but something worth mentioning to the doctor, because it can be treated.

In relational family therapy we see the family as a system in which a change in one member changes the whole. A cancer diagnosis is one of the biggest such changes. The system responds — and most often it responds the way it always has.

Illness has its own time

John Rolland, a psychiatrist and family therapist, described how every chronic or serious illness has its own phases, and how each one asks something different of the family. With cancer this is easy to see.

In the crisis phase — from the first suspicions to the diagnosis and the start of treatment — the family usually pulls together. Everyone is available, phones ring, someone organises lifts, someone gathers information. In the long phase of treatment the initial energy runs out. Chemotherapy or radiotherapy goes on for months, check-ups repeat, waiting for results becomes part of life. This is where old resentments and an unevenly shared burden come to the surface. If treatment doesn’t succeed, the terminal phase follows, in which farewell, nursing care and the conversations everyone had been putting off come to the fore.

This map is useful mainly because it explains why what worked in the first weeks no longer works six months later. A family that functioned like a well-drilled team in the crisis can start to crack in the long phase — not because they love each other less, but because nobody prepared them for how long it would last.

Who in the family takes on what

After a diagnosis, roles are handed out quickly and mostly without agreement. Some of these often appear:

• The coordinator — keeps the calendar of appointments, collects results, rings the ward. Often the same child who always “sorted things out”.
• The researcher — reads articles, seeks a second opinion, asks about new drugs. Their activity is often a way of holding fear at a distance.
• The comforter — looks after the mood, makes people laugh, brings cake. Rarely says how they are.
• The distant one — lives far away or withdraws. Others are quick to judge, but withdrawal is sometimes the only way they can bear it.
• The one who feels — cries, is afraid out loud, asks the questions others avoid. Often experienced as “too much”.

None of these roles is wrong. The trouble starts when a role becomes a prison — when the coordinator isn’t allowed to be tired, the comforter isn’t allowed to be sad, and the whole family’s emotions are loaded onto the one who feels. I wrote about how roles form in childhood in Roles in the family: the hero, the scapegoat, the invisible child. Which was yours?

Alliances also need watching. When the ill parent confides their fear to only one child and not the others, or when the healthy parent redirects their anger at an ill partner onto a child, we speak of triangulation. The one in the middle carries a burden that isn’t theirs, while the others are left outside.

The silence that was meant to protect

One of the most common things that happens in families facing cancer is silence out of love. The parent doesn’t say how frightened they are, so that the child won’t worry. The child doesn’t say how frightened they are, so as not to burden the parent. The psychologists James Coyne and David Smith, who first described it in couples after a heart attack, called this pattern protective buffering: hiding worries and avoiding difficult topics in order to protect the other. Researchers later described it in cancer too. The finding is surprising: the person who protects in this way often pays for it with their own distress, while the other doesn’t necessarily feel any more protected.

Back in the 1960s, while studying how dying was talked about in hospitals, the sociologists Barney Glaser and Anselm Strauss described a state they called mutual pretence: everyone knows the situation is serious, and everyone behaves as if it weren’t. Such silence can seem considerate. But it often means that each person is alone with their fear — precisely at the time when they need each other most.

This is how the first step out of silence might sound (a composite conversation, not a real person):

“Mum, how are you really? Not the results. You.”
“I’m fine. Don’t worry about me.”
“I know you want to protect me. But I’m worried about you anyway. It’s easier for me if I know.”
A long silence. “I wake up at night. I think about what will happen to your father if …”
“I wake up too.”
“Really?”
“Really. We could wake up together, if you like. On the phone.”

Nothing is solved in this conversation. Nobody promises that everything will be fine. But for the first time, mother and daughter are not each on their own shore. That very feeling — that you are not alone in your fear — is what a family facing serious illness needs most. Stories a family leaves unspoken for years are often passed on; I wrote about this in Family secrets and unfinished stories: where a genogram finds them.

What to tell your own children

If you have children yourself, your parent’s diagnosis quickly raises the question of whether, and how much, to tell them about their grandmother or grandfather. The common instinct is to protect them. But children pick up on tension in the house, the hush around phone calls and the tears behind closed doors. If they aren’t given an explanation, they make one up — and their version is often more frightening than the truth, or contains guilt (“Mum is sad because of me”).

What helps children is a short, honest explanation suited to their age: what the illness is called, that it isn’t catching, that nobody caused it, and that someone is still looking after them. It also helps if they can visit their grandparent and draw something for the hospital. If the conversation ever turns to death, some guidance is gathered in How to talk to a child about death – by age.

The fear you carry yourself

A parent’s diagnosis isn’t only about the parent. It is about you too. Many adult children think seriously for the first time about their own mortality, about hereditary risk, about what it would be like if they fell ill themselves. Some start watching their body closely, looking for symptoms, going for check-ups. A little of this attention is reasonable — preventive check-ups are worth discussing with your GP. But when worry grows into constant checking and no test result can settle it, it may be health anxiety, which deserves attention in its own right.

Many people also begin grieving before anything has been lost — for the parent’s strength, for the future you had imagined, for the family’s old rhythm. We call this anticipatory grief: grief that begins before death. It isn’t a bad sign and doesn’t mean you have already “written off” your parent. It means your mind is preparing for a change it can sense.

Fear around a parent’s illness is also very physical: tension in the shoulders, shallow breathing, restless sleep. You don’t have to conquer it. It is enough to find room for it — in conversation, in movement, in the minutes when you don’t have to be strong.

Exercise: a conversation in three sentences

If you notice that your family only talks about the illness in terms of results and appointments, try this during the week.

1. Choose one person — a parent or a sibling — with whom you would like to speak more openly. Not the whole family at once.
2. Prepare three sentences. The first says what you notice (“I’ve noticed we only talk about appointments.”). The second says what you feel (“I’m scared.”). The third says what you would like (“I’d like to hear how it is for you.”).
3. Choose a calm moment — not in the waiting room, not just before results, not in front of the whole family.
4. Say your three sentences and then stop. Don’t fill the silence with advice or reassurance. Let the other person answer — or not.
5. Accept whatever comes. If the other person isn’t ready yet, you have still let them know the door is open. Sometimes that is enough.

Where to find help

For questions about treatment, the first port of call is the treating oncologist and your parent’s GP. It is also worth asking whether psycho-oncology support — psychological help for patients and their relatives — is available as part of treatment. When the patient is at home, the community nursing service (patronaža) at the local health centre can show you many things and help, and for social rights and home help it is best to ask at the social work centre (center za socialno delo). Patients and relatives also find support in associations and self-help groups, where they meet people who have been through something similar.

If the illness progresses, it is good to know in time what palliative care is and when it’s time for it — it isn’t only for the last days. And because the hardest conversations in families are put off the longest, there is a separate piece on that: The conversation about last wishes we all put off — and how to begin it.

A study by David Kissane and colleagues showed that in families who found it harder to talk and support each other, family support that began during palliative care and continued after the death reduced severe distress in bereavement. Conversation in the family is therefore not a luxury. It can be part of protecting everyone who remains.

Where this doesn’t apply

Not every family is quiet out of fear. Some people cope with illness by not talking about it much, and that is good for them. A parent who wants you to talk about the grandchildren on Sundays rather than about cancer doesn’t necessarily have a problem with denial. They may simply be keeping a part of life that isn’t the illness. Openness doesn’t mean everything has to be said, but that the important things can be talked about when someone needs to.

Not every family is in crisis. Many families go through a parent’s illness with great resilience: they grow closer, share out the tasks and say at the end that this period brought them together. If that is true of yours, there is no need to look for problems where there are none.

Not all distress is psychological. Pain, fatigue, sleeplessness and changes of mood in an ill parent may have physical causes or be side effects of treatment. That is why they should always be mentioned to the doctor first. This piece does not replace medical advice.

Psychotherapy does not treat cancer in the family. But it helps the family not to fall apart around it, and helps each person know that they too are allowed to be frightened, tired or angry. In relational family therapy, in which I am training, we often work with exactly this: how old patterns shape the way a family carries a new burden. I also work with English-speaking clients in person in Ljubljana.

What to remember

• Cancer is a “we-disease”: one person falls ill, but the whole family carries it — and how you carry it affects everyone.
• Illness has phases; what works in a crisis wears out during long treatment. That isn’t a sign you love each other less.
• The roles you take on often come from childhood. The problem isn’t the role, but a role you aren’t allowed to leave.
• Protective silence often leaves everyone alone with their fear. One true sentence can open the door.
• Depression in an ill parent and your own distress are not a given — both are worth discussing with a doctor.