Update ~ Dreher’s research has hit mainstream media. See Fox news report. An excerpt 3.20.2012:
Melanie Dreher, who is the dean of nursing at Rush Medical Center in Chicago, did a study in Jamaica. It was actually published in the American Journal of Pediatricsin 1994, but now it’s re-circulating because of all the interest in the neuroprotective properties.
Basically, she studied women during their entire pregnancy, and then studied the babies about a year after birth. And what she studied was a group of women who did smoke cannabis during pregnancy and those who didn’t. She expected to see a difference in the babies as far as birth weight and neuro tests, but there was no difference whatsoever. The differences that the researchers did notice, that are unexplained and kind of curious are that the babies of the women who had smoked cannabis — and we’re talking about daily use during their pregnancy — socialized more quickly, made eye contact more quickly and were easier to engage.
We don’t know why this is so, but all the old saws of smoking during pregnancy will result in low birth weight did not show up — at least in the Jamaican study. In U.S. studies where we’ve seen a similar investigation, women have concurrently been abusing alcohol and other drugs as well.
See Also:
- Pregnancy and Medical Marijuana: Can Pot Help Pregnant Women With Vomiting and Nausea?
- Breathe, Push, Puff? Pot Use and Pregnancy
- Use of Marijuana During Pregnancy “the weight of current scientific evidence suggests that marijuana does not directly harm the human fetus”
The 30-day test showed that children of ganja-using mothers were superior to children of non-ganja mothers in two ways: the children had better organization and modulation of sleeping and waking, and they were less prone to stress-related anxiety. (Melanie Dreher’s studies were funded by Patients Out of Time.)
The editors of Patients for Medical Cannabis were in attendance at the final hearing of the Iowa Pharmacy Board’s review of medical marijuana, where Dr. Melanie Dreher presented the results of her studies with “ganja babies” over the phone. (You can read her testimony on the second page here.) She has been studying the medical uses of ganja, as it’s called in Jamaica, for 30 years.
A quotation from Dreher’s testimony – “You know, people ask me all the time whether I think marijuana should be legalized, and I have been of the opinion for a long time that this is much ado about nothing. It is, compared to tobacco and alcohol, this is such a benign substance.
“It does not seem to make a difference in either the productivity of the people in Jamaica… it seems to make no difference in terms of exposure during pregnancy …We looked at these children again at age five, both groups of children, and could find absolutely nothing that linked their development with their exposure during pregnancy.
“I …would strongly support the decriminalization of cannabis, and now that we understand about the endocannabinoid system that this is documented, it’s researched… now that we have knowledge of why cannabis is good medicine, something that Jamaicans have known for years, I think it’s time to seriously revisit this product, to understand and be able to dispense it as medicine legally and to decriminalize the other uses of marijuana.”
No signs of birth defects
A landmark study conducted in the 1990s by medical anthropologist Dr. Dreher, (co-author of the book Women and Cannabis: Medicine, Science, and Sociology), gave the medical world a different insight into the use of marijuana by pregnant women in Jamaica. Dreher found that marijuana was being used in a cultural and medical context, as a way to relieve morning sickness or nausea, prevent depression and fatigue, and improve appetites. Her team observed both the mothers who used marijuana and their infants; they reported that there were no signs of birth defects or of behavioral problems in the marijuana-exposed children either during the month after birth or even several years after.
This is not to say that women should have no compunctions about using marijuana regularly and in large amounts during pregnancy. Rather, as scientists like Dreher argue, the medical community should improve its research methodologies, be more thorough, conduct more cross-cultural studies, and refrain from being so quick to conclude without solid evidence that any amount of marijuana use–no matter how slight–during pregnancy will do lasting harm to both mother and child. – Source
Melanie Dreher, RN, PhD, FAAN explains her cannabis and pregnancy research study in Jamaica. Pregnant women and their children were studied for over ten plus years, both marijuana smokers and non-smokers were included in the study – one of the first scientific studies of the effects that cannabis may have on pregnancy and the child’s development thereafter.
Prenatal Marijuana Exposure and Neonatal Outcomes in Jamaica: An Ethnographic Study
“Although no positive or negative neurobehavioral effects of prenatal exposure were found at 3 days of life using the Brazelton examination, there were significant differences between the exposed and non-exposed neonates at the end of the first month.
Comparing the two groups, the neonates of mothers who used marijuana showed better physiological stability at 1 month and required less examiner facilitation to reach an organized state and become available for social stimulation.
The results of the comparison of neonates of the heavy-marijuana-using mothers and those of the non-using mothers were even more striking…
- The heavily exposed neonates were more socially responsive and were more autonomically stable at 30 days than their matched counterparts.
- quality of their alertness was higher;
- their motor and autonomic systems were more robust;
- they were less irritable;
- they were less likely to demonstrate any imbalance of tone;
- they needed less examiner facilitation to become organized;
- they had better self-regulation;
- judged to be more rewarding for caregivers than the neonates of non-using mothers at 1 month of age
In this video, Dr. Dreher observes cultural contexts of marijuana use in peri-natal and neo-natal studies, including use of “Ganja Tea”. Appearing before the 2004 Cannabis Therapeutics Conference, hosted by “Patients Out of Time”.
The following comes from Dr. Melanie Dreher, reefer researcher
When Dreher released solidly researched reports showing that children of ganja-using mothers were better adjusted than children born to non-using mothers, she encountered political and professional turbulence.
Dr. Melanie Dreher is one of a handful of scientists who have researched marijuana objectively and intelligently in the last three decades.
Dr Dreher is Dean of the University of Iowa’s College of Nursing, and also holds the post of Associate Director for the University’s Department of Nursing and Patient Services. She’s a perpetual overachiever who earned honors degrees in nursing, anthropology and philosophy before being awarded a PhD in anthropology from prestigious Columbia University in 1977.
Although Dreher is a multi-faceted researcher and teacher whose expertise ranges from culture to child development to public health, she began early on to specialize in medical anthropology. After distinguishing herself as a field researcher in graduate school, Dreher was hand-picked by her professors to conduct a major study of marijuana use in Jamaica. Her doctoral dissertation was published as a book titled “Working Men and Ganja,” which stands as one of the premier cross-cultural studies of chronic marijuana use.
Along with being a widely-published researcher, writer, and college administrator, Dreher is a professor or lecturer at several institutions, including the University of the West Indies. She recently served as president of the 120,000 member Sigma Theta Tau International Nursing Honour Society, has been an expert witness in a religious freedom case involving ganja use by the Ethiopian Zion Coptic Church, and is one of the most well-respected academicians in the world.
This may explain why you hadn’t heard this news before:
from “Dreher’s Jamaican Pregnancy Study – More Suppression of Marijuana Research”
an excerpt:
Dreher decried “the politics of trying to get published.” She now sees it as “a miracle” that Pediatrics published her work on neonatal outcomes, however belatedly, in 1994. (Her paper on five-year outcomes came out in the West Indian Medical Journal before Pediatrics ran the neonatal outcomes.) She suspects that a review of “all the fugitive literature that’s out there that didn’t get published” would convey “a very different picture of prenatal cannabis exposure.”
Honest research is also impeded, Dreher said, by “the politics of building a research career. Most research is done by academics and academia is a very conservative environment where tenure often is more important than truth.” (Dreher is now Dean of the College of Nursing at the University of Iowa.)
The end result of biased science, Dreher observed, is a misinformed public. Recently, she “googled to see what was out there for the general public regarding pregnancy and marijuana.” Typical of the disinformation was an article entitled “Exposure to marijuana in womb may harm brain’ that began “Over the past decade several studies have linked behavior problems and lower IQ scores in children to prenatal use of marijuana…” A reference to Dreher said she had “written extensively on the benefits of smoking marijuana while smoking pregnant!”
See also:
Dreher Recounts Jamaican Study On Cannabis Use in Pregnancy
Editor’s note ~ If the public was given the truth regarding Cannabis, this recent suicide may have been prevented.
Reefer Madness is still ruining lives.

Thanks so much for all this info. I have been very afraid of smoking and harming my child however having such a reliable source telling me this (which I have always believe since I had ADHD which I keep under control with weed) has been great.Thank you for being one of the few academics to touch this subject unbiased by myth and religion.
We were so lucky to hear about Dr. Dreher, and so riveted by her research, this post was really a delight. You are very welcome.
If you ever feel like sharing more about how it helps ADHD, what form of medicine works best for you, etc., we would love to hear. ADHD isn’t something we are familiar with so it would be interesting, we could even do a post about it. Just leave a comment anywhere, we will get it.
a doctor who finally makes sense!
i’m only 6 weeks pregnant and ive been struggling with the decision on whether tp stop smoking or continue. smoking pot not only helps me eat and controls morning sickness but it also is a huge mood stablizer! i get so irritable sometimes especaily towards my baby daddy but smoking weed really helps that out. it calms me down and just makes me a much more pleasant person to be aroun. thank you for helping me make up my mind
It is wonderful!
Dr. Dreher’s study, is something that should be more widely recognized by the medical community and the American Public. I am so sick of the demonizing of marijuana, when way more harmul drugs are legal – ie alcohol and cigarettes, not to mention the enormous amonutns of TOXIC drugs perscribed legally, I mean Adderal, Ritalin – legalized methamphetamine, and they give it to CHILDREN! They allow pregnant women to continue to take antidepressants such as zoloft, and other various drugs for various conditions..
As far as my pregnancy, I am in my second trimester and smoking ganja moderately 2-4 hits/day has helped with both nausea and indigestion. Not to mention the way it has helped with my anxieties.
We need a balanced look at this beautiful, nurturing and therapeutic herb! Stop the sensationalisim.
Touche!!!!!
i really believe that cannabis use during pregnancy is good for you, because iv been smoking my whole pregnancy. im almost eight months, and my husband just got incarcerated almost three weeks ago. cannabis smoking has helped me deal with my husband being incarcerated, my pregnant emotions, and my best friends death.I really think cannabis smoking is better then taking prescription medication.
I have 3 beautiful, healthy, happy children. Each I smoked marijuana with. They are all intelligent beyond their years. My daughters standardized test scores are always above average (high 95% percentile and above). My daughter is a member of the National Society for Gifted and Talented. She was ellected Ambassador of her school this year. My son’s are not old enough yet, but are clearly above their peers. Teachers notice it right off the bat. They are natural leaders with excellent communication skills.
I agree with the post above as well that it will help you deal with the death of a loved one. IT IS WAY BETTER THAN RX MEDICATION FOR YOUR BODY, MIND, SPIRIT and CHILDREN.
I am almost 6 months pregnant and this was all very informative for me. It was very nice to see that someone actually conducted a study and recorded the effects. I have very many friends who either smoked while pregnant, or their mothers smoked while pregnant with them, and the only thing that seems to be common among those people is more intelligent offspring. I have been using marijuana throughout pregnancy to stave off severe nausea as well as anxiety, which was severe before I became pregnant. I knew it was not healthy for a fetus to be living in a stressed out mommy until birth and it seemed this was the most healthy way to relieve anxiety. I felt bad using marijuana during my pregnancy just because the only information thats easy to get a hold of only has negative connotations. This has been calming for me knowing the studies that have been done are showing the effects mentioned. It’s time for this country to embrace marijuana, a healthy natural plant that doesn’t hold the negative effects that alcohol and cigarettes do. I hope we can see a day that this country legalizes marijuana completely, not just in a medical sense.
I used marijuana through half of my 1st child and she is bright and well mannered. I continued with my 2nd but he came out early and I got in a lot of troubled cause my drug test came out positive even though he came out clean. I would like to say that I continued with my 3rd but after all the system did to me and my family I waited till I was clean to go to the Dr. it sucks that the system makes it hard on users with kids cause no matter what they come 1st. Hopefully one day it will be legalized and we don’t have to worry about the government taking are kids away from us cause we smoke pot.
I’m so happy to have found this video. I feel that anyone who looks into marijuana, whether firsthand or from a scientific standpoint, can see that the positive effects far outweigh any (IF any) negative effects of the “drug”. I have been smoking marijuana (or eating ganja foods, hard candies, drops, etc) to deal with anxiety and depression for the past 4 or 5 years, and think that the social perception of the “drug” needs to change from the legalization of a “drug” to the reintroduction of a PLANT to it’s natural habitat. For now though, instead of going straight for full blown, unregulated legalization (such a silly way of looking at a plant.. that you have to legalize something natural. that’s like making having a poplar in your yard criminal), medical and/or small-possession decriminalization, as the first step, will have to do. p34c3, love and potsmoke for all
I am a breast feeding mother. Please tell me if Marijuana will effect my milk supply or my baby in a negative way.
Thanks
E.
I am 50 yrs old,I have had 5 pregnancy,between the age of 21 to 30…I took making babies seriously, I gave up salt,caffeine,alcohol, nicotine and any thing else that might have been bad…I gave birth to 5 perfect children,no complications,the only thing I didn’t give up was Pot….I breast feed till there 1st birthdays….still smoking Pot….my children were never sick as babies or growing up…. they love each other very much…all 5 graduated high school,with teachers telling me, they wished all there students were like my kids… my kids took turns being on the honor roll…so anybody that thinks Pot is bad should get there head checked….Its that simple …POT can save the planet….GIVE POT A CHANCE….
UR AWESOME JEANNE! Thank you for your post!
I lived in california when I was pregnant with my first. I smoked through my whole pregnancy as I was for my depression. I have a wonderful 3 year old now.
I am the mother of three children, the first two I did not smoke with, as I had no morning sickness or nausea. But the third pregnancy was harder and I was sick all the time, so smoked to control this and level out my moods. My youngest is now nearly three years old.
The reason I have started researching this is because he is completely different then the other two. Very wild, has trouble paying attention and listening. Also has huge behavioral issues. Terrible tantrums that will last and last over simple things like opening his snack the wrong way or peeling an orange. He is enrolled with specialist that come in my home and work with him currently. He is very intelligent and baffles his teacher with how well he catches on, it’s mainly his behavior.
What I am getting at is- I wanted to know if I did this to him. Did I cause this and make him this way by smoking?? Am I a horrible mother and ruin my sons life?
It is great to see that there is research being done and good to hear that it’s outcome completely differs from the rest… But why is your research correct and not theirs?
Please don’t get me wrong I am very happy to hear what you have to say, but the officials will most likely down it. What can I say in your and my defense?
Thank you for your hard work and wonderful research, I do feel much better after reading this.
~A struggling mom of a gifted child
Hi



I know how scary it can be, it helps to have people who understand..
I have two children, 8 yr old boy and a 5 yr old girl.
I smoked with both, more with my daughter.
My daughter is amazing! very smart, popular little girl way beyond her years.
My Son sounds just like yours babe. He was diagnoised with Aspergers, (a form of Autism) at 4yrs.
I too for years thought I had done this to my little boy and I was a terrible mother..
The thing is.. The experts dont know what causes Autism Spectrum disorder, and maybe never will
I honestly in my heart dont think smoking Marijuana had anything to do with this now
He to is gifted
I really hope you find out what going on with your little one..
If you need to chat im here
Good Luck Babe
Lina
I’ve often heard that the more intelligent a child is, the more likely they are to have behavioral problems. Their brains work in a different way than most children which makes it hard for parents and teachers to find a way to teach them. This in no way means there is anything wrong with your child. It is completely normal. Sounds like he may have a touch of OCD as well. And as for the other research out there that is different from this, we know the government lies to us all the time, especially about cannabis. I know from experience that most of the things they publish are lies. It really comes down to what your gut says is right. Good luck!
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i have had depression, anxiety and agoraphobia all my life to the point where i get ssi checks. I smoked pot til about 21 wks pregnant instead of the xanex they tried to prescribe me. I quit because i was scared they would take my baby and now at 26wks pregnant i am feeling depressed lethargic anxious and even suicidal, which only makes me feel more guilt ridden. I hope i can make it the rest of my pregnancy without my MEDICATION (pot). But i plan to breastfeed and again am worried about them taking my baby. But i know its so much better than formula feeding. I worry about postpartum depression and without pot i dont know what to do. I need my medicine it doesnt make me a bad mom.
drink tea with red valarian root in it…there’s a bear in pj’s sitting in a chair on the box & i believe it says “SLEEPY TIME” also that same brand has another on that says “TENSION TAMER” ….both help with nausea & anxiety….when i drank the one with the bear on the front I was VERYY calm & chill….try that
hope it helps a little
Hello all. I found this wonderful website on another site trying to find something out. I am grateful to have found this site. I have a question for anyone that can give me some answers. I am currently 30 weeks pregnant and I want to know how to detox my body safely before my baby boy is born. I recently went to the hospital due to severe pain in my stomach and it was due to dehydration. It wasn’t the hospital I go to for my appointments as that one is farther away. Anyhow… they did a drug test and it came back positive for thc. I had no idea about until I went to see my family doc today for some test results on another matter. I smoke occasionally. It’s been about once a month for about 3-5 days smoking 2-4 times a day. Today was the last day I have smoked and it was only once today. I just want to know how to cleanse my system so I don’t have to fear them taking my child from me due to thc being in my system. I agree it helps with pain, vomiting which I still have, depression and fatigue!!! It simply is the best medicine out there. I would much rather smoke ganja than to take any pill the government has put out there!!! So please help me with any info you have!!! Thanks so much and bless you all… much peace n love!!!
there are herbal tea’s one that helps with nausea & another to help relieve tension aka anti anxiety tea….u can find them in really any grocery store…the nausea one has a bear on it & i believe says SLEEPY TIME on it (it makes you relaxed as well) and the other says TENSION TAMER on it…sorry dont know the exact name but really any tea with red Valerian root in it will help with nausea & to relax you…hope this kind of helps
I am 9 weeks pregnant with severe nausea, vommiting, and motion sickness. Ill be graduating this year from high school & i have found marijuana to help me out to be able to get out of bed able to function to eat. I had a previous pregnancy were i got a abortion because the sickness got out of control i wasnt able to handle it i tought i was dying & getting severe anxiety attacks & was weak lost 10lb in a week no medication helped & i never tought of marijuana wish i should of.
I did with 2 of my pregnancy and 2 did not all of my children are alert and smart !! Medical cannabis helps morning sickness but I highly recommend getting your licence for cps
Even after this news the government will still refuse to openly debate legalizing this almost harmless drug.
I smoked Cannibis during my pregnancy and through nursing him also. When he was 4 , I knew he was extremely bright and had him tested. They didn’t have a test geared for a 4 year old the closest was a test for 8 year olds. He scored A 152 IQ!! He was reading at 2 doing math at 3 and understood the concept of the universe at 31/2. He has taught ME alot. Now he is a 32 year old male nurse that takes care of kids with CP. I am proud of him and I don’t see where smoking cannibis did him any harm.
I read about this before getting pregnant as I was concerned about what could/would happen. I would be classed as a heavy smoker, dont drink much, but do smoke.
Took folic acid for a year before finally getting pregnant, lost a heap of weight (72 kg > 59kg) and was being medicated by the Dr due to stress and anxiety attacks.
Got pregnant first try to a donor (not ivf) smoked all the way through.
This was my second pregnancy, first was ivf, which I smoked hardly anything. He was born at 22 weeks and didnt survive. Took 5 years to move on from that.
This pregnancy went to 31 weeks. A beautiful girl Charlotte Daniel Rose, nothing wrong with her apart from being 2 months early. From the day she arrived (after 3 3/4 hour labor) she never looked back. Everyone commented on how cute she was, as prems are usually ‘not so cute’.Nurses threatened to steal her. lol
Shes 11 mths old now, never been sick, was in hospital for 5 1/2 weeks. Had two vaccinations also.
Im not saying to people to start up smoking when you get pregnant. But there is no evidential proof to say it harms you, or the baby