Highlights a 2020 Ontario study of over 500,000 pregnancies (2007–2012), linking prenatal cannabis use to a higher risk of autism spectrum disorder in children.
(Source)
Mentions cannabis is sometimes promoted for morning sickness, though risks are poorly understood.
Ongoing research includes blood and urine analysis and broader regional studies.
🔬 Broader Evidence from Medical Literature
General Risks
No known safe amount of cannabis during pregnancy, per FDA and global health authorities.
THC crosses the placenta and accumulates in breast milk.
Linked to low birth weight, premature birth, growth issues, and neurodevelopmental delays.
Brain & Developmental Effects
THC can interfere with fetal brain development.
Potential long-term effects: emotional, learning, or attention problems.
Autism Risk
The Ontario study found a correlation between prenatal cannabis use and autism risk.
However, it's an observational study — causality not proven.
During Breastfeeding
THC is found in breast milk.
Long-term effects on babies are still unclear.
✅ Bottom Line
Medical consensus: avoid cannabis during pregnancy and breastfeeding.
THC may negatively impact fetal growth and brain development.
Some evidence of increased autism risk, but more research is needed.
Major risks include low birth weight and cognitive delays.
💡 Recommendations for Expectant Parents
Avoid all cannabis use during pregnancy and lactation.
For nausea or stress, consult your OB/GYN for safer alternatives.
Be honest with your doctor about cannabis use — they are there to help you and your baby.
