Toddlers may develop a sleep crutch and constantly need someone around to fall or stay asleep.
Everyone may not have the same bedtime, and disturbances could occur leading to multiple wakings for the child.
Intimacy can take a back seat and may affect the parent’s relationship as well.
Risks of Sudden Infant Death Syndrome (SIDS) may be implied if Safe Sleeping practices aren’t followed.
Sudden discontinuation of co-sleeping could affect the child, if not done gradually. It could result in sleep anxiety, disrupted daytime sleep, and increased nighttime wakings.