Substance use during pregnancy can be risky to the woman’s health and that of her children in both the short and long term. Most drugs, including opioids and stimulants, could potentially harm an unborn baby. Use of some substances can increase the risk of miscarriage and can cause migraines, seizures, or high blood pressure in the mother, which may affect her fetus. In addition, the risk of stillbirth is 2 to 3 times greater in women who smoke tobacco or marijuana, take prescription pain relievers, or use illegal drugs during pregnancy. Surveys suggest that more women are using marijuana during pregnancy, which has health professionals concerned. The American College of Obstetrics and Gynecology (ACOG) suggests that marijuana can result in smaller babies, especially in women who use marijuana frequently in the first and second trimesters. ACOG recommends that pregnant women or women wanting to get pregnant should stop using marijuana, even if it is for medical purposes, and discuss options with their doctors that will be healthier for their babies.Pregnant women should check with their health care provider before using any medicines or substances.
When a woman uses some drugs regularly during pregnancy, the baby can go through withdrawal after birth, a condition called neonatal abstinence syndrome (NAS). Research has shown that NAS can occur with a pregnant woman's use of opioids, alcohol, caffeine, and some prescription sedatives. The type and severity of a baby’s withdrawal symptoms depend on the drug(s) used, how long and how often the mother used, how her body breaks down the drug, and if the baby was born full-term or prematurely.
Symptoms of NAS in a newborn can develop immediately or up to 14 days after birth. Some of these symptoms include:
- blotchy skin coloring
- diarrhea
- excessive or high-pitched crying
- fever
- increased heart rate
- irritability
- poor feeding
- rapid breathing
- seizures
- sleep problems
- slow weight gain
- trembling
- vomiting
Also, substance use by the pregnant mother can lead to long-term and even fatal effects, including:
- birth defects
- low birth weight
- premature birth
- small head size
- sudden infant death syndrome
Some substances, such as marijuana, alcohol, nicotine, and certain medicines, can be found in breast milk. However, little is known about the long-term effects on a child who is exposed to these substances through the mother’s milk. Scientists do know that teens who use drugs while their brains are still developing could be damaging their brain’s learning abilities. Therefore, similar risks for brain problems could exist for drug-exposed babies. Given the potential of all drugs to affect a baby’s developing brain, women who are breastfeeding should talk with a health care provider about all of their substance use.