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Smoking and pregnancy: Understand the risks

How does smoking during pregnancy affect a baby?

Smoking during pregnancy exposes you and your baby to many harmful chemicals, which limit the baby's supply of oxygen and the delivery of nutrients. Nicotine permanently damages a baby's brain and lungs. Smoking during pregnancy has also been linked with many health problems, including:

  • Problems with the placenta
  • Premature birth
  • Birth defects
  • Low birth weight
  • Pregnancy loss

Smoking during pregnancy can also affect a baby after he or she is born, increasing the risk of:

  • Sudden infant death syndrome (SIDS)
  • Colic
  • Asthma
  • Childhood obesity