Tobacco and Pregnancy

Keep your baby healthy and safe from cigarette smoke

Quitting tobacco use is one of the most important actions a woman can take to improve the likelihood of a healthy pregnancy and a healthy baby. Smoking during pregnancy continues to threaten the health of mothers and babies across the nation. It is estimated that more than 426,000 women smoke during pregnancy each year in the US, including thousands of women in Connecticut.

Tobacco use, especially, smoking during and after pregnancy, dramatically increases the risk for a range of health problems for the mother and her baby. Nicotine narrows or constricts the blood vessels in the umbilical cord and womb, which limits the amount of oxygen received by the unborn baby. This reduces the amount of blood in the baby’s system and can cause low birth weight at delivery.  Babies born with low birth weight are at greater risk for childhood and adulthood illnesses and death. 

Quitline and pregnancy

Smoking during pregnancy:

  • If you smoke while you are pregnant, toxic chemicals you breathe in from cigarettes can harm you and your baby.
  • Smoking during pregnancy can also lead to placenta abruption, where the placenta comes away from the wall of the womb too early.  This can lead to preterm delivery, stillbirth, and early infant death.  A woman who smokes during pregnancy is at a higher risk for placenta previa.  This is where the placenta, the organ that nourishes the baby, grows too close to the opening of the uterus or womb.  Often, this condition requires the baby to be delivered by caesarean section.  Additional risk of tobacco use during pregnancy include:

    •  Miscarriage (spontaneous abortion)
    • Sudden Infant Death Syndrome (SIDS)
    • Conception Delay and Infertility
    • Ectopic Pregnancy (pregnancy outside the uterus)
    • Premature Delivery
    • Low Birth Weight and Growth Retardation
    • Stillbirth and Infant Mortality

Secondhand and thirdhand smoke:

  • Toxic chemical that you breathe in from someone else's cigarette or smoke that has lingered in the air and settled on to surfaces still can harm you and your baby.

Breastfeeding and Tobacco Use

Nicotine and other chemicals found in tobacco and tobacco smoke can be passed to the baby through breast milk. It is best for a mother not to use tobacco. However, if a mother cannot quit, it is better for her to breastfeed than formula feed since her baby is at higher risk of having respiratory problems and Sudden Infant Death Syndrome (SIDS). Breastfeeding can lower the risk of both of these health problems. Breastfeeding mothers who smoke may experience a reduction in their milk production.

Source: U.S. Department of Agriculture, Using Loving Support To Grow and Glow in WIC: Breastfeeding Training for Local WIC Staff, 2009 

All children should be protected from secondhand and thirdhand smoke.  Never allow smoking near them, in the house, or in the car.


Pregnant woman

Pregnancy and Preconception Health

When planning a pregnancy, a woman shout quit tobacco before becoming pregnant.  Women who are using tobacco and are pregnant should talk with their health care provider to discuss the best way to quit tobacco and contact the CT Quitline (1-800-QUIT-NOW) for help.

Baby shoes

Sudden Infant Death Syndrome (SIDS)

Breathing secondhand smoke increases the risk for an infant to die of SIDS.  Chemicals in the smoke appear to affect the part of the infant's brain that regulates their breathing.


Pregnancy and Smoking

Tobacco Smoke and Your Baby

DPH WIC (Women, Infants & Children) Program

Postpartum Support International (Connecticut Chapter)

FACT SHEET: Smoke and Vape Free air

The Effects of Tobacco Use (children)

The Benefits of Quitting



Back to Tobacco Control Program Home Page


This page was last updated on October 8, 2021.