Sudden infant death syndrome (SIDS): a condition that occurs when infants stop breathing, usually during the night, and die suddenly without an apparent cause.
Each year, there are about 3,400 sudden unexpected infant deaths in the United States.
Highest risk is at 2 to 4 months of age.
Infants should sleep on their backs rather than on their stomachs.
Less common in bedrooms with a fan, for infants who breastfeed, and for infants who use a pacifier.
Babies might have a higher risk of SIDS if:
their mother smoked, drank, or used drugs during pregnancy and after birth
their mother had poor prenatal care
they were born prematurely or at a low birth weight
there's a family history of SIDS
their mothers were younger than 20 when they gave birth they are around tobacco smoke after birth
babies get overheated