What is Co-Sleeping?

Co-sleeping is a common sleep arrangement where parents and their newborns sleep in close proximity. Many parents choose co-sleeping for easier breastfeeding, bonding, and peace of mind. There are multiple ways to co-sleep, including bed-sharing (sharing the same bed) and room-sharing (baby sleeps in the same room but on a separate surface).

Definition of Co-Sleeping

Co-sleeping is often confused with bed-sharing. The American Academy of Pediatrics (AAP) recommends against bed-sharing due to increased risks of Sudden Infant Death Syndrome (SIDS). However, co-sleeping covers a range of sleep arrangements:

• Sharing a bed (bed-sharing)
• Room-sharing with the baby in a crib, bassinet, or playard
• Sleeping on a sofa, futon, or even the floor, as long as the baby is within arm’s reach

The key element is proximity—keeping the infant close to caregivers. Some experts recommend room-sharing for at least 6–12 months to reduce SIDS risk, provided the baby sleeps on a safe surface without adult pillows, blankets, or doonas that could block airflow.

Benefits of Co-Sleeping

• Comfort and Bonding: Babies often feel more secure and comforted sleeping near their parents.
• Breastfeeding: Nighttime breastfeeding becomes easier for mothers.
• Responsive Parenting: Parents can respond quickly to a baby’s needs and cries.
• Potential Health Benefits: Some research suggests co-sleeping may help regulate babies’ breathing, energy use, and brain development, and may even reduce the risk of depression and unstable blood sugars.

While some families worry about dependency, studies show that children who co-sleep typically transition to independent sleep within about a year of their peers and are just as self-reliant.

Risks of Co-Sleeping

The AAP continues to recommend that infants sleep alone on a safe surface, such as a crib or bassinet, to lower the risk of:

• Accidental suffocation or strangulation from pillows, blankets, or sheets
• Sudden Unexpected Death in Infancy (SUDI), including SIDS and fatal sleeping accidents
• Entrapment between adults or furniture

Risks are higher for babies who are preterm, low birthweight, swaddled, or whose parents are under the influence of medications or substances that alter consciousness. Parents with long hair should tie it back to avoid accidental injury.

However, not all co-sleeping is equally risky. Research led by James McKenna (Notre Dame University) and others indicates that room-sharing—where the baby sleeps near parents but on a separate, safe surface—can reduce SIDS risk by up to 50%.

Conclusions

Sleep arrangements are a personal choice for each family. When practiced safely, co-sleeping can offer many benefits, including easier nighttime feedings, increased bonding, and emotional stability for both parent and child. Media reports sometimes overlook the nuanced risks and benefits—what matters most is creating a safe sleep environment for your baby.

Some studies suggest that co-sleeping may lower SIDS risk, possibly because parents’ presence stimulates babies’ breathing and increases time spent in REM sleep, when the body is most vulnerable to SIDS events. Oxytocin released through skin-to-skin contact can also strengthen the parent-child bond and reduce anxiety around nighttime care.

Frequently Asked Questions

Is co-sleeping the same as bed-sharing?

No. Co-sleeping refers to any arrangement where a baby sleeps close to parents, including room-sharing. Bed-sharing specifically means sharing the same sleep surface, which carries higher risks.

What are the main risks of co-sleeping in 2026?

The main risks remain accidental suffocation, SIDS, and entrapment. These are highest when bed-sharing, especially if the sleep surface is soft or cluttered, or if parents are under the influence of substances.

Are there benefits to co-sleeping?

Yes. Benefits include easier breastfeeding, quicker response to baby’s needs, and stronger parent-infant bonding. Some research suggests potential health and developmental benefits as well.

How can I co-sleep safely?

• Place your baby on their back on a firm, flat surface.
• Keep the sleep area free of pillows, blankets, and soft objects.
• Never co-sleep on a sofa or armchair.
• Do not co-sleep if you are under the influence of alcohol, drugs, or medication that makes you drowsy.
• Consider room-sharing with the baby in a separate crib or bassinet for at least the first 6–12 months.

When should babies transition to sleeping alone?

Experts suggest keeping babies in the parents’ room for at least 6–12 months. Most children who co-sleep transition to independent sleep about a year later than those who do not, with no negative effects on independence.