As cannabis becomes more widely accepted and available across Canada, conversations around its safe use are more important than ever. Especially when it comes to pregnancy.

While some people see cannabis as “natural” and possibly safer than prescription medications, the research is increasingly clear: using cannabis during pregnancy carries serious risks for both mother and baby.

Cannabis is often used to manage nausea, stress, or sleep problems - symptoms that are common during pregnancy. But using cannabis while pregnant is not without harm.

Recent studies show that THC, the psychoactive compound in cannabis, crosses the placenta and reaches the developing fetus. This means that even though the mother may feel fine, the baby is directly exposed to the effects.

Key research findings include:

• Increased risk of low birth weight Higher likelihood of preterm birth
• Greater risk of admission to neonatal intensive care units (NICU)
• Potential long-term impacts on brain development, attention, and behaviour in children

A 2024 review emphasized that prenatal cannabis exposure can disrupt the development of the fetal endocannabinoid system, which plays a critical role in brain and body development.

Many people use cannabis during pregnancy to help with:

• Morning sickness or nausea
• Anxiety or stress
• Pain management
• Sleep difficulties

While it may feel like a “natural” solution, medical experts strongly recommend against it during pregnancy. No amount of cannabis has been proven safe in pregnancy and self-medicating can carry risks that outweigh the short-term relief.

For parents-to-be working in construction, trades, or other demanding jobs, this issue deserves extra attention. Long shifts and physical work can take a toll, and some may turn to cannabis for relief. But during pregnancy, the message from health experts is clear: avoid cannabis altogether.

If you or your partner are pregnant and struggling with symptoms, it’s best to:

• Talk to a healthcare provider about safe alternatives
• Explore non-drug approaches like rest, hydration, or gentle exercise
• Seek mental health support for anxiety or stress
  

Cannabis may be legal, but that doesn’t mean it’s safe during pregnancy. The risks to fetal development, birth outcomes, and long-term child health are real and backed by growing evidence.

If you or someone you know is navigating pregnancy, remember: there are safer ways to manage stress, nausea, and discomfort. Cannabis is best left out of the equation during this important time.