We don’t know a lot about what the effects might be. But while the research is in progress, most experts, including the American College of Obstetrics and Gynecologists (ACOG) and the American Academy of Pediatrics (AAP), advise pregnant women not to use marijuana.
Why? Mostly because the main psychoactive ingredient in marijuana (tetrahydrocannabinol or THC) – that is, the ingredient that makes you “high” – passes through you into your baby’s bloodstream.
This is true whether you’re smoking weed or consuming marijuana edibles. During pregnancy, 10 to 30 percent of the THC in your system can reach your baby. And babies are much more vulnerable to chemicals and toxins than adults.
Most parents wouldn’t dream of feeding marijuana to their baby after birth. Even though we don’t know exactly what the effect would be, common sense tells us it’s not a good idea. The same caution applies while you’re pregnant and the marijuana you use crosses the placenta and enters your baby’s system.
What’s more, weed may be contaminated with other drugs or herbicides that could harm your baby – even if you bought it legally. Some dispensaries claim their products have been approved or certified, but dispensaries are not closely regulated. And marijuana is not less risky than other drugs (such as anti-depressants) because it is “natural.”