How to Explain IVF to Your Older Child

Say three things, in this order: doctors are helping us try for a baby; it involves appointments, scans and injections for a few weeks; and it may not work, which would be sad but would not be anyone's fault. Keeping it that short is deliberate. The mechanics interest adults far more than children, and the part a child needs stated out loud is the part parents most often leave out.

Two findings shape the rest. On timing, the only longitudinal study retrieved that tracked when children were told found better outcomes for earlier telling: among 87 families created through reproductive donation, assessed when the children were 14, those told before age 7 had more positive family relationships and higher wellbeing than those told later (Ilioi et al, Journal of Child Psychology and Psychiatry 2017;58(3):315-24). On what a child can do with the information, the relevant work is developmental rather than reproductive: across 15 studies of 1,414 children aged 5 to 11, optimism about whether a treatment will work falls steadily with age (Lockhart and Keil, Monographs of the Society for Research in Child Development 2018;83(2):7-32). A six-year-old is the one most likely to assume the treatment must succeed.

It covers disclosure of donor conception to the child who was conceived that way. It does not cover a sibling being told that a cycle is happening now. This matters because the two are routinely conflated, and the second has no evidence base at all in anything retrieved for this article.

What the donor-conception work does establish is that children born through assisted reproduction are, as a group, doing fine. A systematic review of 17 publications on adolescents conceived by IVF, egg donation and donor insemination found them as well adjusted as naturally conceived peers and normative samples, with positive parent-adolescent relationships; the review also flags that its own generalisability is limited by low disclosure rates and small samples (Ilioi and Golombok, Human Reproduction Update 2015;21(1):84-96). In a separate cohort of 30 surrogacy, 31 egg-donation, 35 donor-insemination and 53 natural-conception families, children's Strengths and Difficulties scores at ages 3, 7 and 10 sat within the normal range throughout (Golombok et al, Journal of Child Psychology and Psychiatry 2013;54(6):653-60).

So the reassurance a worried parent is usually looking for — that talking about this does not damage children — is supported. The specific script is not.

The most directly useful evidence here is not about fertility. Lockhart and Keil ran 15 studies with 1,414 children aged 5 to 11 and 882 adults on how people reason about medicines and medical treatments, and four of their findings change how you would phrase this:

• Children as young as 5 to 7 already distinguish physical from psychological problems, and which treatments suit each. You do not have to pretend a medical explanation is beyond them.
• Young children treat medicines as agent-like things that travel only to the affected part and cure whatever is wrong. That is why side effects are hard for them, and why "the medicine makes Mum tired" needs saying explicitly rather than being left to inference.
• Young children judge that big departures from a prescribed schedule will still work, and are less likely than older children to distinguish a short illness from a long-running one. A timetable of daily injections is not self-evidently important to them.
• Optimism about whether a treatment will work declines with age. The younger the child, the more likely they are to assume this will end in a baby.

The last point is the one that does the most work. A child does not need protecting from the possibility of failure so much as they need it mentioned before it happens, because their default assumption runs the other way.

Name it once, early, in plain words, and separate it from blame. Something close to: "the doctors are helping, and sometimes it works and sometimes it does not, and if it does not we will tell you." Then keep the promise, because a child who was told the outcome was uncertain and then hears nothing will fill the silence themselves.

There is evidence that secrecy has a cost on the parents' side, which is the side children read. In the Golombok 2013 cohort, mothers who had kept their child's origins secret showed elevated levels of distress; and maternal distress had a more negative effect on children who were aware of their origins than on those who were not. The honest reading of that pair of findings is not "tell and everything is fine" — it is that what you are managing is your own distress as much as the child's information.

Disclosure is also not uniformly easy for the adults. Following donor-insemination and egg-donation families at ages 1, 2, 3, 7 and 10, Blake and colleagues found disclosure was not always associated with optimal parental adjustment — notably for fathers in donor-insemination families during middle childhood, when children's understanding becomes more sophisticated (Human Reproduction 2014;29(11):2487-96). Support for the parent doing the telling is part of the task, not a soft extra.

These are practical framings drawn from the developmental findings above. No source retrieved for this article tested wording on siblings of children conceived by IVF, so treat them as reasoned starting points rather than validated scripts.

• Ages 4 to 6: one sentence, concrete, repeated when asked. Doctors are helping us try for a baby. Expect the child to assume it will work, so add that it might not. Expect questions about whether Mum is ill — say she is not.
• Ages 7 to 9: they can hold a sequence. Eggs and sperm are joined by doctors in a laboratory and then placed in the womb. This is the age where the medicine-as-cure-all assumption starts to give way, so side effects and a timetable can be explained rather than just announced.
• Ages 10 to 12: they will look it up. Better that the first version they hear is yours, including the part about uncertainty, and including that not every cycle leads to a pregnancy.
• Teenagers: expect questions about cost, about why now, and about what it means for them. The developmental evidence says their optimism is lower than a younger child's, which usually means they need less protection from the odds and more honesty about them.

If the sequencing itself is what you want to describe accurately, what actually happens across an IVF cycle sets out the steps in order, and what couples commonly feel during treatment covers the adult side of the same weeks.

That is a different disclosure, and it is the one the research is actually about. The HFEA states that evidence from the experience of donor-conceived people and of adopted people shows it is best to talk to children about their origins in early childhood, and that where telling has happened later it can still be done well with the right preparation. The HFEA gives no specific age.

The Ilioi 2017 finding is the closest thing to a number: within families who had told, telling before age 7 was associated with better family relationships and adolescent wellbeing at 14. Note what it does not say — there were no overall differences between disclosing families, non-disclosing families and natural-conception families. The comparison that favoured early telling was among the families who told.

Indian practice on donor disclosure was not covered by any source retrieved for this article, so nothing here should be read as a statement about what Indian law requires or permits on telling a child about a donor.

Several claims attach themselves to this topic that the sources here do not support.

• That there is a tested way to explain IVF to an older sibling. Nothing retrieved studied it, compared methods, or followed the sibling afterwards. The age bands above are inference from developmental research on medicines, not findings about IVF.
• That telling a child improves outcomes. Ilioi et al found no overall difference between disclosing, non-disclosing and natural-conception families at 14; the earlier-is-better result holds within the disclosing group only.
• That secrecy harms children directly. What was measured was elevated distress in mothers who kept origins secret, and a stronger effect of maternal distress on children who already knew.
• That children conceived by IVF need a psychological explanation at all. A systematic review of 17 publications found adolescents conceived by IVF, egg donation and donor insemination as well adjusted as naturally conceived peers.
• That any particular book, doll or diagram helps. No source retrieved here evaluated a teaching aid for this purpose.
• That the psychosocial guidance covers siblings. ESHRE's 2015 routine psychosocial care guideline addresses patients' behavioural, relational, emotional and cognitive needs, and notes that mood changes during treatment were similar whether or not women had existing children — it does not set out how to talk to those children.

What is established is narrower and still useful: early is better than late among families who tell, children of 5 to 7 can handle a factual medical explanation, younger children will assume success unless told otherwise, and the parent's own distress is part of what the child is reading.