It is thought that around two thirds of mothers used a dummy at some point. The NHS include dummy use in their guidelines as a possible way of preventing cot death (SIDS) saying: 'It is possible that using a dummy at the start of any sleep period reduces the risk of cot death. However, the evidence is not robust and not all experts agree they should be promoted'. ##### The reasons behind this are that the bulky external handle of the dummy may help keep your baby's nose and mouth clear of covers and soft bedding, and the sucking action may help improve the way your baby controls the upper airway ##### It is also possible that use of a dummy may affect the sleeping position of your baby in a positive way that helps to prevent SIDS or that using a dummy may keep baby in a state of greater arousal so they could be less likely to suffer from breathing or heart problems while asleep. ##### Most parents start using dummies when their baby is 2-3 months old to soothe their baby or to help them get to sleep. ##### #####It is thought that sucking on a dummy can help relieve pain, which is why parents often give their baby a dummy when they have colic. ##### Most of the negative issues associated with dummy use are connected to prolonged use. When used as an aid to get to sleep when baby is younger than one year old many parents find them very useful.