Sudden infant death syndrome (SIDS) is also known as ‘cot death’ and ‘crib death’. SIDS is defined as any death of an infant under one year of age that cannot, after thorough investigation, be explained by a known cause. The loss of a child is a very distressing time for families; however, counselling and support are available.…
- Co-sleeping is the name for sharing a sleeping area with your baby. It is the most common sleeping arrangement in the world.
- Co-sleeping can mean sharing a bed, or sharing a room (where you and your baby sleep on different surfaces in the same room).
- Co-sleeping can have many advantages, including quicker and easier access to the baby, less anxiety and 'fuss' when baby wakes or is hungry, and better sleep for parent and baby.
- In some situations, co-sleeping can pose a safety concern.
- In the end, it is up to the individual parent to make their informed decision.
What is co-sleeping?
Co-sleeping is sharing a sleeping area with your baby. It can include sharing a bed, or room sharing (where you and your baby sleep on different surfaces in the same room).
Co-sleeping is the most common sleeping arrangement in the world. In current Western society co-sleeping is less common, though it has become more popular in recent years. Most parents co-sleep with their babies at some point, for some time.
Co-sleeping can be a controversial subject, with advocates pointing to the benefits of the practice, while detractors cite safety concerns. In the end, it is up to the individual parent to make their informed decision.
Advantages of co-sleeping include: 
- Reduced anxiety levels for baby and parent;
- Quicker access to the baby, so that soothing or feeding can be done while the baby is still stirring and has not completely woken up. This can result in better sleep for parent and baby;
- Makes breastfeeding easier;
- Less need for 'fuss' (entering the child's room, turning on a light, making noise, etc.) when baby wakes;
- The closeness of bed sharing helps the infant's body regulate their breathing, body temperature and heart rate, and;
- Co-sleeping can help form stronger emotional bonds between baby and mother.
- The main disadvantages of co-sleeping are safety concerns (see 'Safety', below), and;
- For some parents, sharing a sleeping space with a baby is not a comfortable sleep arrangement and makes intimacy between couples more difficult.
It is not yet clear whether a baby sleeping in a bed with a parent does indeed increase the chance of sudden infant death syndrome (SIDS). However, it is clear that the risk is increased in the following situations:   
- Co-sleeping on a sofa, couch or chair;
- Bed sharing with a parent who is under the influence of alcohol or medications;
- Bed sharing with a parent who is very tired;
- Bed sharing with a parent who is a smoker, or;
- Bed sharing with a person who is not a parent (such as a sibling).
Room sharing has been shown to protect against SIDS.
For more information on SIDS and safe infant sleep positions, see our SIDS page.
- McKenna, J.J. and McDade, T. (2005) Why babies should never sleep alone: a review of the co-sleeping controversy in relation to SIDS, bedsharing and breast feeding. Paediatric Respiratory Reviews 6:134–152.
- Blair, P.S., Sidebotham, P., Pease, A., et al. (2014) Bed-sharing in the absence of hazardous circumstances: is there a risk of sudden infant death syndrome? An analysis from two case-control studies conducted in the UK. PLoS ONE 9.
- Carpenter, R., McGarvey, C., Mitchell, E.A., et al. (2013). Bed sharing when parents do not smoke: is there a risk of SIDS? An individual level analysis of five major case–control studies. BMJ Open 3:e002299.
- SIDS and other sleep-related infant deaths: expansion of recommendations for a safe infant sleeping environment. (2011) Pediatrics 128:e1341-1367.
FAQ Frequently asked questions
What is co-sleeping?
Co-sleeping is sharing a sleeping area with your baby. It can include bed sharing (where you and your baby sleep on the same surface) and room sharing (where you and your baby sleep on different surfaces in the same room).
How can I keep my baby safe from cot death?
During the first six months of life, infants are at particular risk of dying while sleeping. Sudden infant death is a harrowing experience and a constant worry for any parent. Adopting a safe sleep position will help reduce the chances of sudden …
How common is co-sleeping?
Globally, co-sleeping (baby and parent sleeping together) is the most common sleeping arrangement in the world. However, in Western society it is less common, though it has become more popular in recent years.