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Harvard Health Blog
According to the American Academy of Pediatrics (AAP), the best place for a baby to sleep is in his parents’ bedroom. He should sleep in his own crib or bassinet (or in a co-sleeper safely attached to the bed), but shouldn’t be in his own room until he is at least 6 months, better 12 months. This is because studies have shown that when babies are close by, it can help reduce the risk of Sudden Infant Death Syndrome, or SIDS.
A study published in the June, 2017 journal Pediatrics, however, points out a downside to this: babies don’t sleep as well, and by extension, neither do their parents.
Researchers found that “early independent sleepers,” babies who slept in their own room before 4 months, slept longer, and for longer stretches, than babies who slept in their parents’ room. At 9 months, these babies were better sleepers, not just compared to those who slept in their parents’ room, but also to those who transitioned to their own room between 4 and 9 months.
This is no small thing for sleep-deprived parents. Even a few extra minutes can make all the difference — and given that research suggests that sleeping well in infancy improves the chances of sleeping well in childhood, the study seems to suggest that getting babies out of their parents’ room from the get-go could be a real sanity saver.
The study also found that babies who shared a room with their parents were four times more likely to end up in their parents’ bed during the night — and more likely to have pillows, blankets, and other unsafe stuff around when they sleep. Interestingly, babies who slept in a different room were more likely to have a consistent bedtime and bedtime routine, something that has been shown to help babies sleep better.
But as with most things in medicine, it’s not that simple.
As was pointed out in a commentary accompanying the study, early “sleep consolidation,” or sleeping many hours at once, isn’t necessarily a good thing. The ability to wake easily is important and may be critical in preventing SIDS. The waking up that happens with room sharing may be the exact thing that protects the baby.
It should be pointed out, too, that infancy doesn’t last forever. As much as it can feel like an eternity of being woken at night, the fact is that over time, most babies learn to sleep through the night and give their parents a break.
Also, having the baby sleep nearby helps with breastfeeding. It’s a simple fact that because breast milk is digested more quickly than formula, breastfed babies tend to eat more frequently than formula-fed babies. When babies are in another room, it’s harder and mothers may give up and switch to formula earlier.
It would be so easy if there were rules for parenting that worked for every family, but that’s just not the case. Every family and every child is different; in every situation, it’s about weighing risks and benefits.
Room sharing can help prevent SIDS and support breastfeeding, that’s clear. Also, room sharing doesn’t mean that babies can’t have a consistent bedtime and bedtime routine; it may be tempting to keep the baby up until the parents go to bed, but it doesn’t have to be that way. But the benefits of room sharing diminish when room sharing becomes bed sharing, or when other rules of safe sleep (like no pillows) get broken. Safe sleep, and good sleep routines, should happen no matter where a baby sleeps.
At the same time, if room sharing means that parents aren’t getting any sleep because they are woken by every baby whimper and squeak, that’s not good for anybody — and if the parents’ relationship is suffering significantly because they don’t feel that they can or should be intimate near the baby, that’s not good for anybody either.
What’s important is that parents know the recommendations, and the facts behind those recommendations. Once they have that information, they should work with their pediatrician to make the decisions that make the most sense for their child’s safety, their sanity, and the overall health and well-being of their family.
Claire McCarthy, MD, Senior Faculty Editor, Harvard Health Publishing
As a service to our readers, Harvard Health Publishing provides access to our library of archived content. Please note the date of last review or update on all articles.
No content on this site, regardless of date, should ever be used as a substitute for direct medical advice from your doctor or other qualified clinician.
New urine test may help some men with elevated PSA avoid biopsy
Dupuytren’s contracture of the hand
Why play? Early games build bonds and brain
Moving from couch to 5K
How — and why — to fit more fiber and fermented food into your meals
Tick season is expanding: Protect yourself against Lyme disease
What? Another medical form to fill out?
How do trees and green spaces enhance our health?
A muscle-building obsession in boys: What to know and do
Harvard Health Ad Watch: New drug, old song, clever tagline
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