It is four in the morning and you have two tabs open. One says the baby should be in your room for six months. The other says twelve. Both are national health bodies. Neither is a crank.
This article does not tell you which to follow. It explains why they differ, because once you can see the shape of the disagreement it stops being frightening and becomes something you can take to your own midwife or doctor with a specific question.
Both sources are usually right
Guidance is not just evidence. It is evidence plus a judgement about how to phrase it for a whole population.
Two committees can read the same studies and still publish different sentences, because they are making different calls about what happens when a tired person reads that sentence at 4am. One body optimizes for the clearest possible instruction. Another builds in a range because it does not want to make people feel they have failed.
So the first question to ask of any conflicting advice is not "which is true" but "who issued this, and for whom."
Room-sharing: six months or twelve?
In the United States, the American Academy of Pediatrics recommends that the baby sleeps in the parents' room ideally for the first six to twelve months, and at least for the first six.
In England, the NHS and the Lullaby Trust recommend the first six months.
Read carefully, these overlap almost entirely. Both say at least six. One adds that longer may be better. That is a difference in where the sentence stops, not a contradiction — and it is a good example of two guidelines that look opposed in a forum post and turn out to agree once you read both.
Solids: the four-versus-six-month split
This one is a genuine divergence.
The World Health Organization and the NHS both use "around six months" for introducing solid food.
The American Academy of Pediatrics, in its infant feeding guidance, has historically described a window of four to six months.
And Ireland's Health Service Executive splits it by feeding method: around six months for breastfed infants, and not before seventeen to eighteen weeks for formula-fed ones.
Three respected bodies, three different formulations, and a parent who moved from Dublin to Boston will have been given two different answers by two competent professionals. Neither of them was wrong where they were standing.
Telling a real conflict from a phrasing difference
A quick way to sort them:
- Do the ranges overlap? If one says "at least six" and the other "six to twelve", that is one piece of advice said two ways.
- Is one of them conditional? Ireland's weaning split is not a disagreement with the WHO — it is a different answer to a different question.
- How old is each document? Guidance gets revised, and a lot of what circulates online is a summary of a summary of something withdrawn years ago.
- Which country is it for? Health guidance is written for a population, its healthcare system and its risks. Yours is the one where you live.
- Is it a health body at all, or an author with a book to sell?
If a conflict survives all five, it is real, and it is exactly the thing to raise at your next appointment. "The NHS says this and the AAP says that — which applies to us?" is a question any clinician can answer in thirty seconds, and it is a far better use of an appointment than the ones people usually apologize for asking.
Experts disagreeing is normal and is not evidence that the experts are wrong.
What we are not doing here
You will notice this article does not tell you when to start solids or where the baby should sleep. That is deliberate and permanent.
We do not have a clinician on staff and we are not going to write as though we do. Every guideline above is attributed to the body that issued it, so you can go and read the original — which is the honest version of what a site like this can offer on a medical question.
What we can do is show you the shape of the disagreement, so that the next time two sources contradict each other you already know what kind of contradiction you are looking at.
