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UK body backs research into cannabis and cancer pain

The UK’s National Cancer Research Institute (NCRI) has endorsed a study into the role of cannabinoids in treating cancer-related pain.

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study to examine cannabis and cancer pain
The development will give hope to cancer patients worldwide

The UK’s National Cancer Research Institute (NCRI) has endorsed a study into how cannabis can help treat cancer-related pain.

CBD Science Group has received highly sought-after endorsement from the NCRI for its Real World Evidence (RWE) study into the role cannabinoids can play in treating cancer-related pain. 

The development will give hope to cancer patients worldwide as the treatment and management of cancer pain continues to be a major burden on patients and families.

In the UK there are an estimated three million patients suffering from cancer with 367,000 new diagnoses per year, with pain affecting the majority of this population.

With the impact of Covid-19 it has been reported that the UK is experiencing an emerging cancer crisis after new figures recently showed more than 300,000 people had missed checks for the disease since the start of the pandemic. 

The National Institute for Health and Care Excellence (NICE) guidelines on medical cannabis, found that previous evidence for chronic pain associated with cancer patients was lacking. 

NICE has also recommended against opioid use for people with chronic primary pain, given the lack of evidence proving effectiveness and significant evidence showing the long-term harm caused by opioids.

The fear that more patients than ever are going untreated for their cancer and opioid prescriptions will continue to skyrocket as suitable alternatives are still unavailable through the NHS.

“Previous research into cancer-related pain focused on those with advanced disease, however there is a large and rapidly growing population of people surviving for many years with cancer,” commented Prof. Emeritus Sam Ahmedzai, co-chair of NCRI Living With and Beyond Cancer Research Group.

“The reality is that chronic pain related to the cancer itself or indeed arising from the anti-cancer treatments, is an insurmountable barrier to living a productive and rewarding life with family and friends – at all stages of cancer. Sadly current pain treatment options are largely ineffective or cause even more harmful side-effects; therefore new research is urgently needed to find better therapies.

“I am delighted to actively participate in CBD Science Group’s goal of finding an effective and safer medicinal cannabis solution to relieve the suffering of patients living with cancer-related pain.”

Through its RWE study, CBD Science Group aims to deliver therapies to patients across the UK, with patient recruitment underway ahead of a start date in 2022.

The company has appointed a distinguished Clinical Advisory Board under the direction of the Group’s chief clinical advisor and former deputy medical director of NHS England Professor Mike Bewick, along with other leading experts in the space including Professor Sam Ahmedzai.

Graeme McFarlane, chief commercial officer, CBD Science Group added: “We are delighted and proud to have been offered this endorsement from the NCRI LWBC, which offers hope to millions of people with long term cancer pain around the world. This partnership will further progress CBD Science Group towards our objective of realising the advantages of cannabinoids in fulfilling this urgent need of suffering patients. We strongly believe in the opportunity that our RWE study presents, and look forward to working closely and deepening our relationship with the NCRI”

Mental health

Mental health, addiction and medical cannabis – an expert’s insight

We sit down with the recently-appointed medical director of The Medical Cannabis Clinics, Dr Luisa Searle.

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Mental health, addiction and medical cannabis - an expert's insight

The recently-appointed medical director of The Medical Cannabis Clinics, Dr Luisa Searle, shares how her background in psychiatry and addiction is feeding into her new role. 

Dr Luisa Searle has been treating patients with addiction disorders for the last six years, seeing patients struggling with substance misuse and establishing outreach services for young people and the homeless across London. 

Now, she is helping people legally access cannabis, a substance that has historically been demonised as a ‘gateway drug’. 

Feeling burnt out and craving a fresh new challenge, Dr Searle was looking for a change in her career when she crossed paths with The Medical Cannabis Clinics, joining the team as medical director in April this year. 

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“It frustrates me, this division that there seems to be in mental health, whereby if you’ve got a substance misuse issue, you’re not worthy of mental health treatment,” Dr Searle told Cannabis Health. 

“But actually, your mental health is often being self-medicated by substances and whether you agree with that or not, that’s how some people cope.”

Prior to joining TMCC, Dr Searle was unaware that medical cannabis was beginning to be prescribed more widely.

She was coming into the industry with a fresh perspective, and despite her background in addiction medicine, she said she had very little prejudice against cannabis. 

“It didn’t make sense to me to not explore it,” Dr Searle said.

Dr Luisa Searle, medical director at The Medical Cannabis Clinics

A balanced approach

“I’m not here to say it’s a wonder drug. I’m not here to say it doesn’t have its risks or side effects. It’s by no means suitable for everybody, but this idea that it’s a substance of abuse and not even [worth] researching as a potential medicine I think is, unfortunately, based in historical racism and hysteria, which has no place in science as far as I’m concerned.”

But while she was intrigued by this new and emerging field of medicine, due to her past experience, she was determined to take a “balanced approach” to prescribing. 

For Dr Searle, it is imperative that cannabis is seen for what it is. While it has immense potential for managing hard-to-treat conditions and a possible alternative to physically addictive opioids, it is still a substance that can cause dependence. 

“Any substance, legal or illegal, with some psychoactive effect has the potential for abuse, but that’s where I come in as the doctor,” Dr Searle said. 

“If I felt that you needed diazepam, that prescription is entirely under my control. It is down to me to work with patients  to try to prevent [dependency] from happening and to advise and educate them, so that they can make informed decisions about their care.”

Dr Searle is only three months into her role at TMCC but she is already seeing the positive impact that medical cannabis is having on patients. 

People with difficult-to-treat conditions like insomnia and anxiety are seeing improvements in their lives after trying numerous conventional treatments that failed to help. 

Meanwhile, patients who have previously relied on pharmaceuticals like antidepressants and SSRIs  – which can come with severe side effects – were able to “feel themselves” again after reducing their dose of traditional medication in favour of medical cannabis. 

“What’s really been nice is seeing success with people who have tried lots of different conventional treatments and haven’t really gotten anywhere,” Dr Searle said.

“I was talking to a gentleman who had a traumatic brain injury and was getting migraines on a regular basis. He had really struggled with his work and his life. With a small amount of medicinal cannabis flower, he feels much more himself.

“That’s the really nice thing [about] working in this clinic; just seeing that turnaround in people who’ve been quite stuck.”

NHS access

Having worked for the NHS for 15 years, Dr Searle is a firm believer in everyone having access to the healthcare they need. 

Right now, this does not apply to the medical cannabis space. Very few people have been able to access an NHS prescription while private prescriptions can cost hundreds per month. 

“It is a little bit challenging for me that I have to be in a private clinic in order to provide medical cannabis treatment,” Dr Searle said.

“While TMCC has extremely reasonable prices in comparison to other types of private health care, it is still a cost and if you’re on a low income it might as well be a million pounds.”

Dr Searle wants to see medical cannabis being more widely prescribed, but it has to be “sensible” with regulations around who can prescribe and how. 

She continued: “Why shouldn’t it be available on the NHS in the right circumstances? What I don’t want to see is what can potentially happen with opioids – with people becoming dependent on them.

“It’s not a medication for all. There are concerns, particularly among younger people. We’re still not 100 per cent clear as to the risks around potentially life-changing mental health issues and specifically psychosis.”

Importance of eduction

Dr Searle has not encountered huge numbers of cases where recreational users have later developed psychosis, but she has seen enough for it to be a concern. 

“It’s not something that I could just dismiss,” she said.

“When we have young people coming to us, it’s all about education. It’s just like any medication, if you start on antidepressants, you don’t start with a high dose, you start on a low dose and build it up. You check the tolerance and you review the patient regularly to see if there have been any improvements or side effects.”

Dr Searle also points out that studies into psychosis and cannabis use have examined street cannabis rather than medical-grade products prescribed by clinics like TMCC. 

“Street cannabis potentially has incredibly high levels of THC and very low levels of CBD,” she said

The benefits for some patients speak for themselves, but Dr Searle stresses the fact that a medical cannabis prescription is not right for everyone. 

“Whilst I think [medical cannabis] is great and we get lots of positive feedback, we do have some adverse reactions to it where it’s not suitable,” she said.

“People shouldn’t be lulled into a false sense of security that just because your doctor prescribed it and it’s legal for medicinal use it’s not without its risks.”

Dr Searle sees a lot of potential in cannabis as an alternative drug for chronic mental health disorders and pain, even as a possible method for weaning patients off opioids. But she warns that people who are prone to addiction may end up transferring their dependency from one substance to another. 

“If you break your leg, opioids are fantastic for that, but what they’re not so good for is chronic pain,” she said. 

“The withdrawal process from them can be horrendous and there could be a place for cannabis to alleviate some of those withdrawal symptoms.”

But, she added: “I think I would be much more cautious about that, simply because until you’ve dealt with and understood your addiction and those behaviours and those are resolved and you’ve engaged with other ways to cope with your emotional stresses, you may just be switching one addiction for another.”

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Women's health

Medical cannabis and pregnancy – what you need to know

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Canadian cannabis patients use less opioids and alcohol – study

Just under half of patients say they have reduced their use of other controlled substances. 

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Canadian cannabis patients use less opioids and alcohol - study

Just under half of Canadian medical cannabis patients say the treatment has enabled them to reduce their use of other controlled substances. 

According to new data, nearly one in two Canadian patients authorised to use medical cannabis say they have been able to reduce – or cease entirely – their consumption of other controlled substances, particularly opioids and alcohol.

A team of researchers from Canada and the United States surveyed almost 3,000 Canadian patients enrolled in the nation’s federal medical marijuana programme, which began over two decades ago. 

Medical cannabis has been legal in Canada since 2001, the country legalised the possession and retail sale of adult-use cannabis in 2018.

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In the research, which was published in the Journal of Cannabis Research, investigators reported that 47 per cent of respondents acknowledged substituting cannabis for other controlled substances. 

Of those who said that they used cannabis in place of prescription medications, half acknowledged doing so for opioids – a finding that is consistent with other studies. 

Many respondents also reported using cannabis to reduce their alcohol intake.

However, the study highlighted the need for more open communication between patients and their doctors.

Around one-third of respondents did not inform their primary care providers (PCP) that they were engaging in drug substitution.

Authors concluded: “This study examined patient-provider communication patterns concerning cannabis use and substitution in Canada. 

“Results suggest that patients often substitute cannabis for other medications without PCP guidance. The lack of integration between mainstream healthcare and medical cannabis could likely be improved through increased physician education and clinical experience.

“Future studies should investigate strategies for effectively involving PCPs in patient care around medical cannabis with specific focus on substitution and harm reduction practices.”

Commenting on the findings, NORML’s deputy director Paul Armentano, said: “Cannabis has established efficacy in the treatment of multiple conditions, including chronic pain, and it possesses a safety profile that is either comparable or superior to other controlled substances.

“It is no wonder that those with legal access to it are substituting cannabis in lieu of other, potentially less effective and more harmful substances. As legal access continues to expand, one would expect the cannabis substitution effect to grow even more pronounced in the future.”

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