What is a significant risk factor for sudden infant death syndrome (SIDS)?

A significant risk factor for sudden infant death syndrome (SIDS) is co-sleeping with parents. This practice can increase the risk due to several factors, including the potential for accidental suffocation, overheating, or the infant being trapped between the mattress and the wall or headboard. Co-sleeping can also limit the ability of a caregiver to respond to the infant's needs effectively, creating an unsafe sleeping environment.

In contrast, breastfeeding has been shown to reduce the risk of SIDS, as it is associated with a variety of protective health benefits. Sleeping on the back is the recommended sleep position for infants and is one of the most effective measures to prevent SIDS. Using a pacifier during sleep has also been found to be protective against SIDS, as it may promote better airway management and reduce the likelihood of rebreathing exhaled air.