Though the reasons are not fully understood, there are studies that suggest pacifier use during sleeptime reduces the risk of SIDS. This holds true even if the pacifier falls out of the baby’s mouth after insertion. Once it falls out, it should not be reinserted, and a baby should never be forced to take a pacifier if he or she refuses. Parents should also avoid hanging a pacifier around a baby’s neck because of the risk of strangulation.