Which significant risk factor is associated with the development of Sudden Infant Death Syndrome (SIDS)?

Infants sleeping on their stomachs is recognized as a significant risk factor for Sudden Infant Death Syndrome (SIDS). The sleeping position of an infant plays a crucial role in their sleep safety. When infants are placed on their stomachs to sleep, their airways can become obstructed more easily, increasing the risk of rebreathing exhaled air, which can lead to lower oxygen levels and potentially life-threatening situations. This position has been thoroughly researched, leading to public health guidelines that recommend infants be placed on their backs for sleep to reduce the incidence of SIDS.

In contrast, frequent feedings during the night, using pacifiers regularly, and exposure to bright lights while sleeping do not have established associations with an increased risk of SIDS. The emphasis on back sleeping as a preventive measure is part of the broader "Back to Sleep" campaign, which has significantly reduced the rates of SIDS in recent years.