Can stopping pacifier use affect my child’s bowel movements?

While there isn’t always a direct link, it’s quite common for parents to notice changes in their child’s bowel habits—like constipation—after they stop using a pacifier. One reason might be the vagus nerve, which plays a key role in controlling swallowing, digestion, and gut movements.

When a baby uses a pacifier, their tongue tends to stay low in the mouth, which can influence how this nerve is stimulated. Once the pacifier is gone, the way the mouth muscles work changes, and the body may start to stimulate the nerve differently. This can temporarily affect digestion and bowel movements.

Every child is different, so if your child has ongoing constipation or other issues after giving up the pacifier, it’s a good idea to check in with a healthcare professional.