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how long does marijuana stay in breastmilk

New Research Provides Insight Into How Long Marijuana May Stay In Breast Milk

During pregnancy and breastfeeding, one of the biggest challenges women face is the fact that what they consume is inevitably transferred to their child. This is why there are so many rules and guidelines about what mothers should and shouldn’t eat, drink, and so on. As such, many moms are left wondering when it’s safe for them to drink alcohol, or even smoke or consume marijuana again postpartum. So, how long does marijuana stay in breast milk? New research says that it might be longer than you may think.

According to a new study by the University of California San Diego, published in Pediatrics on Monday, researchers tested breast milk samples to determine which substances would still be present after a period of time. Researchers found that THC from marijuana was detectable in 34 out of the 54 samples — or 63 percent — when tested six days after consumption, according to U.S. News & World Report. Additionally, as CNN reported of the small study’s findings, which included 50 women who used marijuana, “the average concentration of THC found in those samples was 9.47 nanograms per milliliter.” CNN also reported that based on this average concentration, researchers hypothesized that a 13-pound 3-month-old would “ingest about 0.040 nanograms of THC per milliliter” of breast milk.

Despite the fact that levels of THC are still detectable in breast milk nearly a week post-consumption, the more important question is whether or not those quantities could impact a baby’s health.

“The question is, does it matter?” Christina Chambers, author of the study, said, according to CNN. “Is it possible that even low levels in breast milk may have an effect on a child’s neurodevelopment? And we don’t know the answer to that. That’s a testable hypothesis and something that we want to move forward with trying to answer, because it’s a critical question.”

However, as noted by USA Today, while the research on whether these amounts of THC can impact a baby’s health via breast milk consumption is “lacking,” it’s still important to simply be aware that they are present.

But that’s something Chambers and other researchers want to explore further. As Chambers explained in a press release for the study published by Science Daily.

Are there any differences in effects of marijuana in breast milk for a two-month-old versus a 12-month-old, and is it different if the mother smokes versus eats the cannabis? These are critical areas where we need answers as we continue to promote breast milk as the premium in nutrition for infants.

Of course, this research also brings up the question of how many pregnant women and new mothers are consuming marijuana in the first place. The Centers for Disease Control and Prevention reported in March of this year that it has been linked to birth defects, low birth weight, and other problems with newborns. As far as breastfeeding goes, the CDC’s report explained: “Chemicals from marijuana can be passed to your baby through breast milk. THC is stored in fat and is slowly released over time, meaning your baby could still be exposed even after you stop using marijuana.”

With that said, there’s some mixed research about the safety of smoking while pregnant. For instance, according to a 1991 study published by the West Indian Medical Journal, Jamaican women who smoked marijuana during pregnancy, and actually found that babies whose mothers smoked during pregnancy had better autonomic stability and reflexes. Though the study is over 20 years old, that doesn’t necessarily negate the results.

Regardless, what matters most is that pregnant women are informed about all of the research regarding their health, their bodies, and the safety and well-being of their children. And of course, if mothers have any questions or concerns on the subject, always consult with a doctor or health care professional.

During pregnancy and breastfeeding, one of the biggest challenges women face is the fact that what they consume is inevitably transferred to their child. This is why there are so many rules and guidelines about what mothers should and shouldn’t eat,…

Study Finds Marijuana Stays in Breast Milk for Longer Than Some May Think

That’s too long to “pump and dump”

For new moms experiencing nausea — or simply those who are stressed out — online support groups are filled with women citing the benefits of marijuana. But despite the growing acceptance of cannabis, research suggests that women who are pregnant or breastfeeding should avoid the drug.

A study published Monday in the journal Pediatrics found that low levels of the chemicals in marijuana were measurable in breast milk up to six days after women had smoked pot or eaten an edible. There’s long been a lack of research into the area but this new study signals that it Marijuana may stay in breast milk longer than some mothers may think.

However, it’s not clear whether these chemicals negatively affect child development yet, senior study author Christina Chambers tells Inverse.

“It’s really important to be able to gather more information on marijuana so that pediatricians can know what to say, with good evidence to back that up, and moms can make better decisions,” says Chambers, a pediatric researcher at the University of California, San Diego who also helps run a counseling service called MotherToBaby.

To better understand how much marijuana or its active chemicals actually get into breast milk and how long they remain, Chambers and her team analyzed samples donated by 54 women to a breast milk repository between 2014 and 2017. The women also answered questions about their use of marijuana, prescription medications and other substances in the 14 days before their milk samples were collected.

The researchers found that tetrahydrocannabinol or THC, the main mind-altering substance in marijuana, was detectable in 34 samples, or 63 percent of the breast milk samples for up to six days after the mother’s last reported use. The average concentration: 9.47 nanograms of THC per milliliter of breast milk.

That may seem like a really small amount, especially considering that a baby will only actually ingest about one percent of that THC, but previous research in rodents indicates that even small amounts of THC can impair concentration, attention, memory and problem-solving abilities, according to Dr. Teresa Baker, an associate Professor in the Department of Obstetrics and Gynecology at Texas Tech University Health Sciences.

“If a drug is producing physiological symptoms in the mom, it’s probably in large enough quantities that we should be concerned about her breast milk too,” Baker says.

Nevertheless, rodents are not humans, and there haven’t been enough long-term studies in humans to determine the cognitive, intellectual and behavioral effects of THC in children, she says.

Given the uncertainty of the drug’s effects, the duration it takes to get it completely out of one’s system may be even more important. For example, mothers may be able to drink a cup of coffee and their body will metabolize get rid of all the caffeine in a few hours. During that time mothers may decide to skip a feeding, or they may decide to “pump and dump” the breast milk, Chambers says. But because of the way marijuana metabolizes and dissolves easily in fat, THC and other compounds stay in the body longer. Studies show that in daily users, compounds from cannabis are detectable in bodily fluids for up to 30 days after last use. Moms who regularly smoke or ingest pot may not have the option to “pump and dump.”

Moreover, because the study did not specifically track when mothers consumed cannabis, it may be possible that the levels of THC that babies are exposed to in breast milk are much higher immediately after use.

But because breast milk can be extremely beneficial to infants, researchers agree that mom’s who smoke weed should not give up breastfeeding either. “It puts pediatricians in a really awkward position,” Chambers says. That’s why it’s so important to find out how marijuana can affect a breastfeeding mother’s milk supply — and for how long, she says.

However, until we know more, the American Academy of Pediatrics recommends that mothers simply avoid marijuana during pregnancy and while breastfeeding.

That’s too long to “pump and dump”