Thanks NannyOggs really interesting. I found this article by Peter Fleming (from googling Peter Fleming Co sleep) which I assume is the same guy www.bmj.com/content/350/bmj.h563
Haven't read the whole thing yet but in the comments Peter English says (www.bmj.com/content/350/bmj.h563/rapid-responses) that the paper can be summarised as "As long as you don't smoke, drink, or take recreational drugs, and you do it in the bed and not on the sofa, the risks of co-sleeping are so small that meta-analyses can't reliably detect them - they may be non-existent. The benefits of co-sleeping (bonding, easier breast-feeding...) do not appear to have been assessed but are likely to outweigh the minimal or non-existent risks of co-sleeping"
As someone who is breastfeeding and sometimes co-sleeping (and I can say I feel SO MUCH BETTER and more able to function in the day when I do co-sleep as I actually get some sleep) it does frustrate me how black and white these public health messages are.
Even with a co sleeper cot, I found that occassionally I would fall asleep when sitting up to feed BECAUSE SO SO TIRED OVER MONTHS (sorry about caps but, y'know, feel strongly) and surely this is more dangerous than lying down to feed with baby next to me? This is why I now sometimes co-sleep - if I'm so tired I feel I will likely fall asleep sitting up.
They also don't seem to ever look at the daytime risks associated with chronically sleep deprived parents and surely these should be weighed up against any risks from co-sleeping.
It is massively frustrating they don't separate out 'safe' cosleeping practice with 'unsafe' too (e.g. on sofas). Very stupidly designed experiments by people who haven't been parents, or perhaps men who left it to their wives. Basically, not the primary caregivers designing these experiments anyway.....
Also supposedly breastfeeding reduces SIDS risk but something like 80% of breastfed infants cosleep at some point. Has this apparent contradiction been unpacked anywhere?
Just feel at the moment generally the advice is 'Happy mum, happy baby' but then also 'don't do anything that could make you a happy mum" (e.g. get sleep from cosleeping, leave baby to sleep in pram, swing, etc) so really, you can't win.