When your child asks whether you are going to die

It usually arrives sideways — in the car, at bath time, halfway through homework. Are you going to die?

It helps to know what the child is usually asking. Not for a statistic. They are asking whether the ground is still there, and who will be holding them if it moves.

NCI's page for parents opens on honesty: telling the truth is better than letting children imagine the worst. That is the frame for everything else.

Then it gives you the specific correction most children need. Just because you have cancer does not mean you will die from it, and in fact many people live with cancer for a long time. For a child whose entire mental file on cancer comes from a film or a rumour at school, that sentence is genuinely new information.

NCI also lists other things children need to hear alongside it — that nothing they did, thought or said caused this, that they cannot make you well but can do things that help you feel better, and that scientists are finding many new ways to treat cancer.

You are not choosing between honesty and comfort. NCI's four reassurances are all true things you can say.

NCI's caregiver booklet includes a message worth memorising word for word: no matter what happens, you will always be taken care of.

Notice what it does. It does not predict the future, so it is not a promise that can be broken. It answers the fear underneath the question, which for most children is about themselves and who will look after them. And it is something you can arrange to be true regardless of how anything else turns out.

Sometimes the honest answer is that nobody knows yet. NCI's booklet is explicit that this is an acceptable thing to say. Be honest when you lack answers, it advises, and model living with uncertainty.

That last phrase deserves attention. Children learn how frightening a thing is by watching how the adults hold it. "I do not know, and my doctors are working on it, and we will keep telling you the truth" teaches something durable. A false certainty that later collapses teaches something else.

You can also pair uncertainty with a concrete near-term fact, which is what NCI's booklet suggests for primary-school children generally: focus on what will happen in the near future rather than the far one. Tomorrow's plan is easier for a child to hold than a prognosis.

The booklet notes that children ask the same questions repeatedly as part of normal development, and that the response is to answer calmly each time. Do not read a repeat as evidence that your first answer failed. Children re-check important information the way adults re-read a contract.

NCI's booklet lays out approaches by age group: very short talks and simple language for the youngest children, several brief conversations for those roughly six to nine, letting ten- to twelve-year-olds set the pace while correcting anything they have got wrong, and giving teenagers factual information while accepting that they may avoid the topic, seem embarrassed, or need time alone. Teenagers may also raise "what if" questions, which the booklet says to answer.

For adult children, NCI's page takes a different turn: include them in medical discussions and in advance directive planning. The conversation stops being about protection and becomes about partnership.

NCI encourages parents to draw on outside support for children, including friends, teachers and spiritual leaders, and points teenagers to its own guide written for them. A hospital social worker can help you rehearse the words before you need them, which is a lot easier than composing them while your child is looking at you.