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Study: Traces of THC could stay in breast milk for up to six weeks

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The study aimed to better understand the effect of cannabis use has on breastfeeding

A new study has revealed that detectable levels of THC from cannabis use were found in breast milk up to six weeks after birth.

Researchers at Children’s Hospital Colorado (Children’s Colorado) have found that THC, the psychoactive component of cannabis, stays in breast milk for up to six weeks.

The findings support the recommendations of the American Academy of Pediatrics, the American College of Obstetricians and Gynecologists and the Academy of Breastfeeding Medicine to abstain from cannabis consumption during pregnancy and while a mother is breastfeeding. 

This is the first study examining THC in breast milk and plasma among women with known cannabis use in pregnancy since a 1982 study in the New England Journal of Medicine.

“With the increasing utilisation of marijuana in society as a whole, we are seeing more mothers who use marijuana during pregnancy,” said Erica Wymore, MD, MPH, primary investigator, neonatologist at Children’s Colorado and assistant professor of pediatrics at the University of Colorado School of Medicine.  

“However, given the lack of scientific data regarding how long THC persists in breast milk, it was challenging to provide mothers with a definitive answer regarding the safety of using marijuana while breastfeeding and simply ‘pumping and dumping’ until THC was no longer detectable in their milk. 

“With this study, we aimed to better understand this question by determining the amount and duration of THC excretion in breast milk among women with known prenatal marijuana use.”

The researchers studied women with prenatal cannabis use who delivered their infants at Children’s Colorado and UC Health’s University of Colorado Hospital between November 1, 2016, and June 30, 2019. 

Specifically, researchers recruited women over the age of 18, who had a history of cannabis use during pregnancy or a positive urine test for THC when admitted for delivery.

Participants also had to be willing to abstain from cannabis use for six weeks after delivery and provide milk, blood and urine samples during this time.

Of the 394 women who were screened, 25 enrolled. Seven of these women were ultimately able to abstain from cannabis use for the duration of the study.

Reasons listed for the others’ inability to abstain included stress, sleep and pain relief.

The study found that, while the concentrations of THC varied from woman to woman (likely depending on their level of use, BMI and metabolism), THC was excreted in the breast milk of these seven women for up to six weeks. 

All of the women still had detectable levels of THC in their breastmilk at the end of the study.

Maya Bunik, MD, MPH, senior investigator, medical director of the Child Health Clinic and the Breastfeeding Management Clinic at Children’s Colorado and professor of pediatrics at the CU School of Medicine commented: “This study provided invaluable insight into the length of time it takes a woman to metabolize the THC in her body after birth, but it also helped us understand why mothers use marijuana in the first place.”

She continued: “To limit the unknown THC effects on fetal brain development and promote safe breastfeeding, it is critical to emphasize marijuana abstention both early in pregnancy and postpartum. To help encourage successful abstention, we need to look at – and improve – the system of support we offer new mums.”

Longitudinal studies from the 1980s have shown that children born to mothers who used cannabis during pregnancy experienced long-term issues with cognitive and executive functioning, including impulsivity, as well as deficits in learning, sustained attention and visual problem-solving skills.

“This study was not about the impact marijuana has on babies, but we are concerned,” added Wymore. 

“Especially when we consider that today’s marijuana is five to six times higher in potency than what was available prior to recent marijuana legalization in many states.”

This study was funded by the Colorado Department of Public Health and Environment (Marijuana Public Health Research grant 2902) and a Children’s Hospital Colorado Research Institute microgrant and received support from the Colorado Fetal Care Center and the Colorado Perinatal Clinical and Translational Research Center.

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New grant funds for “life changing” medical cannabis prescriptions in Jersey

Jersey residents can now apply for a grant from the Sapphire Medical Foundation

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Jersey residents can now apply for a grant to fund a medical cannabis prescription, from the UK’s only medical cannabis charity, Sapphire Medical Foundation.

Thanks to new funding, patients on the island of Jersey can now apply for a grant to fully support a medical cannabis prescription.

Those selected who meet the eligibility criteria, will have their  prescriptions and clinic appointments be paid for by the Sapphire Medical Foundation for a minimum of one year.

Medical cannabis was legalised for prescription in 2018 across the UK, since then the growth in patient numbers paying privately for treatment has risen exponentially.

Eligible patients can seek treatment for conditions including chronic pain, neuropathic pain, generalised anxiety disorder and fibromyalgia.

In Jersey, there are now an estimated 3,000 patients prescribed the treatment via private clinics, such as Sapphire Medical Clinics.

The cost associated with prescriptions for medical cannabis can be a barrier to what is for some people a life-changing medication.

As a result, some patients are faced with the decision between prioritising their health or other necessities – never more so than in the current economic squeeze with living costs rising.

Sapphire Medical Foundation’s mission is to reduce the economic barriers of access to medical cannabis. It was founded to relieve financial difficulties that can affect individuals who are unable to afford the costs associated with medical cannabis prescriptions.

No other charity in the UK exists with the sole purpose of alleviating the monetary burden that comes with cannabis-based treatment. Thus, the Sapphire Medical Foundation presents the only legitimate option for medical cannabis access for hundreds, if not thousands of individuals.

Kirran Gill was the first patient in the UK to receive support from the Sapphire Medical Foundation for rheumatoid arthritis, fibromyalgia and anxiety and says that because of treatment, her pain levels have been significantly easier to manage and the severe side effects from using conventional treatment (such as opioids) are less severe.

Additionally, her appetite, nausea, anxiety, and overall mood have improved. Access to medical cannabis has greatly impacted her life in a positive way.

Dr Simon Erridge, co-founder and trustee of Sapphire Medical Foundation commented: “We want to help as many patients as possible in the Island community and thank those who have made this new funding round possible.

“We are delighted to invite residents who meet our stringent grant making criteria to apply for support to access medical cannabis for a minimum of one year.”

This grant round opens to Jersey applicants on the 17 May 2022, closing 6th June 2022. Applications are open to both existing medical cannabis prescription holders, and patients who otherwise meet the grant-making criteria but have not accessed treatment to date.

Applications can be made on Sapphire’s website. All grants are made following a thorough assessment of eligibility and in accordance with fair and transparent grant making principles to available here.

The Sapphire Medical Foundation provides financial assistance to cover the costs of treatment for a minimum of one year for each patient who receives one of the grants.

Sapphire Medical Foundation will launch an additional grant round in summer 2022 which shall be open to all UK patients and those in the Channel Islands.

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Research to shed light on how UK clinicians view medical cannabis

UK medical professionals are invited to take part in a new ​​outreach project

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Psychology student and addiction expert, Hallie Heeg, is collaborating with Drug Science on the project

A new research project aims to get to the bottom of why many UK clinicians are still reluctant to prescribe medical cannabis.

Medical cannabis patient and psychology student, Hallie Heeg, is inviting UK medical professionals to participate in a new ​​outreach project, which aims to shed light on their views and knowledge around prescribing medical cannabis.

Heeg, who is originally from the US, has more than a decade of experience working in the field of addiction and eating disorder recovery – which enlightened her to the role cannabis can play in holistic healing.

After entering recovery from an eating disorder herself in 2006, Heeg began managing rehab clinics and went onto work for the Hazelden Betty Ford Foundation, the largest non-profit addiction and mental health programme in the States. 

“In the addiction field it’s drugs or no drugs, it’s very black and white, but I started seeing people who were sober, using psychedelics for trauma work in a clinical way – but they were having to keep it hidden,” she says.

“I got really frustrated by that, because if as clinicians, their creed was to do no harm and to put the patient first, we should be looking at all these different types of modalities and different medications and not just putting our beliefs into one.”

Heeg self-medicated for many years before accessing a cannabis prescription, finding that it helped ease her anxiety and quieten the negative thoughts of her eating disorder. 

“I’ve used it throughout the years, but more from a recreational perspective,” she explains.

“[When I got my prescription] I started seeing my anxiety decrease, I started seeing the negative thoughts going away and I was having a healthier relationship with food. Slowly I was able to reduce the prescription drugs I was on.”

The question of why

Moving to the UK after meeting her husband, Heeg got a coaching certificate and founded her own coaching and intervention service, WeRise, to continue supporting patients through recovery. Last year, she went on to enrol on a Masters programme in psychology at the University of East London.

For her dissertation she has collaborated with the UK’s drug reform charity, Drug Science, to try to understand the attitudes of clinicians towards medical cannabis.

“There are something like 1.4 million medical cannabis users in the UK, however, that’s typically those who have to source it from the illegal market,” she says.

“I really want to understand why people aren’t prescribing and why the numbers on the illicit market are so big in the UK, but yet the amount of medical cannabis users being able to access it legally is so small.”

The first step in the project is a five minute, anonymous survey for doctors and prescribing nurses across the country.

“There are not a lot of studies around medical cannabis in terms of doctor’s knowledge, particularly in the UK, because it is so new,” says Heeg.

“Myself and Drug Science are hoping to raise awareness around this and from a patient advocate standpoint, but equally from a medical and research standpoint, help inform them on how they could actually become prescribers.”

She adds: “It will also help us with making decisions and determining policies, by really understanding what the views of the medical community are, why they believe this and how we can debunk any myths around it.”

Hallie Heeg has worked in addiction for over a decade

Medical cannabis and eating disorders

After completing her Masters, Heeg plans to open her own eating disorder clinic and treatment centre. 

Having seen the benefits of medical cannabis both personally and through her clients, she would like to see more research and discussion around its use in these conditions.

“I really have seen great results with it, typically in anorexics and bulimics, and my hope is that we can play a part in doing more research around that,” she says.

“Every week we hear about how eating disorder services are in crisis, there’s a shortage of beds, the number of adolescents struggling is rising – it’s the number one mortality among any mental illness. And yet we don’t seem to put a lot of effort into research around that when it comes to medical cannabis.”

However, her colleagues in the field – and that of addiction – have been reluctant to engage so far.

“When I sent my survey out to those contacts, I got several responses back saying ‘I work in addiction, why would I take the survey?’ And since I sent it out to my eating disorder network, I haven’t gotten a response back,” says Heeg.

“It feels a little vulnerable for me to kind of put this research out there, because there’s a community that I’ve been a part of that also looks at it as this gateway drug.”

She adds: “It’s been challenging, to be honest with you, to find clinicians who are even interested in taking a survey with the word medical cannabis in.”

Doctors and prescribing nurses in the UK can complete the anonymous survey here

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Fibromyalgia diaries: Travelling as a medical cannabis patient

Medical cannabis patient, Julia Davenport, on the challenges of travelling with a prescription.

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South Africa remains one of fibromyalgia patient Julia Davenport's favourite places - but getting there isn't always easy.

While cannabis oil has dramatically improved fibromyalgia patient Julia Davenport’s quality of life, it has brought with it new challenges when it comes to travel, as she explains here.

Chronic pain has a nasty habit of getting in the way of doing the things you love.

My big passion which I share with my husband, and I guess our one extravagance, is jetting off to far flung places.

Over the years, however, fibromyalgia, arthritis and aching joints have conspired to make travelling evermore arduous.

Now in my 70s with various replacement parts, difficult terrain is one of the biggest barriers to exploring new places.

Certainly, my husband’s bucket list destination, the Galapagos Islands, is on my no-fly list. I would have adored to go there at some point, but navigating those volcanic rocks, even with my walking stick, would be a nightmare.

Fibromyalgia: A banner advert for the medical cannabis clinic

Familiar holiday spots closer to home are also becoming increasingly inaccessible. Every year our extended family visits the same Northumberland cottage, which is at the bottom of a steep bank.

In years gone by, I’d be fine to walk down to it through the working farm in which it stands. Now, because my back and shoulders have deteriorated, I have to drive right to the door.

Finding ways to compensate for the things you can no longer do is a constant theme with chronic pain conditions.

Aside from mobility challenges, another restriction on travel with rheumatological conditions can be the weather, and humidity can play havoc with chronic pain. I’d love to go to Central America, for example, but I just couldn’t tolerate the heat and humidity.

Having said that, although hot dry weather is far better than the cold British winter, the difference is not enough to drag me away from my family at Christmas time.

For all my gripes about life on the road, though, traveling remains my great joy, and discovering medical cannabis and CBD has definitely helped; although it’s not all plain sailing.

Travelling with medical cannabis

In November I’m returning to South Africa, a place I’ve visited a few times and which has a special place in my heart.

On previous visits, because we’ve flown via Dubai, I’ve not taken medical cannabis or CBD with me.

There is no way I’d risk taking cannabis with me to the UAE, where people have apparently been arrested and put in jail for having codeine, never mind anything else, despite having a prescription for it.

They have a ridiculously long list of substances that they deem addictive which you can’t have. There are things you can apply for permission to take, but I just wouldn’t trust that I wasn’t going to get arrested.

When we’ve flown long-haul through Dubai in the past, I would tend to take enough medication just for the journey. I have even flushed pain medication down the toilet on a connecting flight to Dubai just to make sure I’m not in possession on arrival.

I’ve then managed to pick up cannabis products quite easily in certain final destinations.

In South Africa there was a shop similar to a Holland and Barrett which sold CBD products legally. They were able to match the equivalent of what I was already taking to their products.

In Japan, it was also relatively easy to buy CBD over the counter, even with the language barrier.

In the past, the ease at which you can buy CBD has definitely influenced my travel choices. There are lots of countries that I’d give a wide berth to because of their approach to medication, which is often underpinned by false views on addiction.

At the same time, with so many countries opening up to CBD, travelling is getting easier and the main challenge is the routing of flights through the Gulf.

Thankfully on my next trip to South Africa we are travelling direct to Cape Town directly so I can rest easy that I won’t end up behind bars.

Guidance for travelling with medical cannabis

Some countries allow medicinal cannabis and some even recreational cannabis. Some allow CBD but others do not.

Guidance from the Medical Cannabis Clinicians Society recommends that patients always contact the embassy to check the legal situation in the country they are visiting before travelling with medical cannabis.

 Some countries require a letter of proof from a clinician, some require a request to be submitted to the embassy requesting to travel, some restrict the amount of medication you are able to travel with, i.e. up to 30 days supply. It is suggested that any guidance is sought and confirmed in writing.

It is advised that travellers keep medication on their person, stored in its original packaging along with a copy of their issued prescription and relevant corresponding paperwork. 

You can get an idea of the country’s stance on cannabis initially by searching for “legality of cannabis” on Wikipedia – but always check with the embassy as well.

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