The safest choice is to avoid cannabis and breastfeeding at the same time. THC, the main psychoactive compound in cannabis, passes into breast milk and can reach your baby. Major health organizations recommend not using cannabis while breastfeeding because there is no known safe amount.

Why is cannabis a concern while breastfeeding?

THC is stored in body fat and can be released slowly into breast milk. That means it may be present for days or even weeks after use, depending on how often and how much you use. Because a baby's brain and body are still developing, exposure to THC could affect growth, sleep, and behavior. Research on long-term effects is limited, but caution is advised.

How does THC get into breast milk?

When you inhale or ingest cannabis, THC enters your bloodstream. It then passes into breast milk. The amount that reaches your baby depends on how much you use, how you use it, and your own metabolism. Smoking or vaping may deliver a faster, higher dose than edibles, but all forms carry risk.

Possible risks for the baby

These risks are based on limited studies and case reports. Because infants are especially vulnerable, health experts recommend erring on the side of caution.

Is there a safe amount or a way to time use?

No safe level has been established. Some people try to "pump and dump," but THC can remain in breast milk for an unpredictable length of time. Waiting a set number of hours does not guarantee that the milk is free of THC. The only way to fully avoid exposure is to not use cannabis while breastfeeding.

What if you used cannabis before knowing you were breastfeeding?

If you used cannabis and then breastfed, do not panic. The best step is to talk with your healthcare provider. They can help you assess the situation and decide on the next steps. You may also want to pause breastfeeding until you have more guidance, and use previously pumped milk or formula in the meantime.

Safer alternatives and support

If you use cannabis to manage stress, pain, or sleep, there are other options. Talk to your provider about safe treatments during breastfeeding. Counseling, support groups, and lifestyle changes can also help. If you are struggling with substance use, ask for help without judgment.

When to talk with a healthcare provider

Always discuss cannabis and breastfeeding with your doctor or a lactation consultant. They can give you personalized advice based on your health and your baby's needs. If you are having trouble stopping, ask about resources and support.