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Known Risk Factors

Babies are at higher risk for SIDS if they:

  • Sleep on their stomachs
  • Sleep on soft surfaces, such as an adult mattress, couch, or chair or under soft coverings
  • Sleep on or under soft or loose bedding
  • Get too hot during sleep
  • Are exposed to cigarette smoke in the womb or in their environment, such as at home, in the car, in the bedroom, or other areas
  • Sleep in an adult bed with parents, other children, or pets; this situation is especially dangerous if:
    • The adult smokes, has recently had alcohol, or is tired.
    • The baby is covered by a blanket or quilt.
    • The baby sleeps with more than one bed-sharer.
    • The baby is younger than 11 to 14 weeks of age.