No. Major medical organizations, including the American College of Obstetricians and Gynecologists (ACOG) and the Centers for Disease Control and Prevention (CDC), advise against using cannabis during pregnancy. No safe amount and no safe trimester have been established, so the clearest guidance is to avoid marijuana, THC, and CBD products while you are pregnant, trying to conceive, or breastfeeding.
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What is the official guidance on cannabis and pregnancy?
ACOG recommends that people who are pregnant or planning a pregnancy stop using cannabis and be counseled about the potential effects on the fetus. The U.S. Surgeon General issued an advisory urging pregnant people and those considering pregnancy to avoid marijuana. The FDA advises against CBD use during pregnancy and while breastfeeding. These are consistent positions across obstetrics, public health, and drug regulation, not the view of a single agency.
cannabis pregnancy risks
Why do health agencies recommend avoiding it?
THC crosses the placenta and can reach the developing fetus. Cannabis smoke also contains carbon monoxide and other irritants that reduce oxygen delivery, which matters because oxygen supply is critical during fetal development. Research has linked cannabis use in pregnancy with a range of outcomes, though study designs vary and some findings are mixed.
cannabis pregnancy effects on baby
- Lower birth weight and shorter gestation, including preterm birth
- Increased risk of stillbirth and admission to a neonatal intensive care unit
- Possible long-term differences in attention, memory, and behavior during childhood
- THC passing into breast milk and being stored in body fat
Is there a safe amount or a safe trimester?
There is no established threshold. Some people assume that occasional use, low-THC products, or use only in the first trimester is low risk, but no research supports a safe cutoff. Edibles are not a safer alternative; they deliver THC more slowly but still deliver it. Vaping and smoking add inhaled irritants on top of THC exposure.
Why do pregnant people use cannabis?
The most common reasons are nausea and vomiting, trouble sleeping, anxiety, appetite loss, and chronic pain. Some people report that cannabis helps these symptoms. The difficulty is that symptom relief does not remove the uncertainty about fetal exposure, and there are tested alternatives for each of these problems.
What are safer options for nausea, sleep, and anxiety?
Talk with your obstetric provider or midwife about what is appropriate for you. Options that are commonly discussed include:
- Vitamin B6 with doxylamine or a prescription anti-nausea medication for morning sickness
- Small frequent meals, hydration, ginger, and acupressure for nausea
- Sleep hygiene changes, and treatment of reflux or restless legs that disrupt sleep
- Therapy such as cognitive behavioral therapy for anxiety, plus a review of any medications you take
What about CBD, topicals, and hemp products?
CBD is not approved for use in pregnancy, and most CBD and hemp products are not tightly regulated, so labels may not match contents. Some hemp-derived products contain THC. Topical products are less studied, and absorption depends on the formula and the amount used. None of these categories has been shown to be safe in pregnancy.
What if you used cannabis before you knew you were pregnant?
Do not panic, and do not hide it from your provider. The most useful step is to stop and be honest at your next prenatal visit so your care team can adjust monitoring. In some places, hospitals screen for substance use during pregnancy or at delivery, and results can carry legal implications. Ask your provider what the policy is where you live.
Where should you get information you can trust?
Your obstetric provider, midwife, or a maternal-fetal medicine specialist is the right source for questions about cannabis and pregnancy. A dispensary, a budtender, or an online forum is not a medical authority on pregnancy, even when the advice sounds reassuring. If you are looking for symptom relief, say that plainly to your provider, because that is a treatable problem with options that have been studied in pregnancy.