Recent research is helping us better understand how substance use, especially cannabis—can affect pregnancy, fetal development, and long-term health. The evidence shows that cannabis can interact with how the placenta grows and functions, and it may influence things like blood flow, fetal growth, and early brain development. While there are still gaps in knowledge, the overall direction is clear: avoiding cannabis before and during pregnancy and while breastfeeding supports healthier outcomes for parents, babies, and future generations.
Reflection for FASD Prevention Conversation facilitators
The research underscores that substance use during pregnancy can influence how the placenta functions, how a baby grows, and early brain development, even when all long-term effects are still being studied.
Facilitators play an important role in translating this evidence into conversations that are clear, respectful, and grounded in real life. When people understand both the risks and the reasons behind them, prevention becomes more meaningful and supportive.
Three key takeaways from the research
- Pregnancy is a sensitive time. Substances can affect placental health, blood flow, and fetal development.
- Exposure can have lasting impacts. Early effects may extend into childhood development and health over time.
- Avoidance is protective. Current evidence supports reducing or avoiding substance use before and during pregnancy and breastfeeding.