This feedback is from my notes. Any gaps and there are plenty - please look at the research if you can find it (rather than newsaper reports which are likely to be biased) . Some of the research papers might not be the exact ones they were refering to - I’m just looking on the web and finding the nearest available.
1. Welcome from Sir Malcome Rawlins, chair of ACMD
I missed this but apparently he said said he had received a letter of reassurance from the Home Secretary after reports that she was prepared to disregard the committee’s recommendations.”I will be reading a letter from the Home Secretary that I received yesterday, basically saying that the Government has an open mind.”
Asked if he had been reassured by the pledges in Ms Smith’s letter, Sir Michael said: “Absolutely, yes.” ( Mental Health Foundation )
SESSION 1 - CANNABIS POTENCY AND BEHAVIOUR
2. Dr Mike White (FSS) “THC content of seized cannabis and cannabis content of reefer cigarettes
3. David Potter (GW Pharmaceuticals) “THC content of UK Cannabis”
His powerpoint presentation was very similar to this one which I found googling.
Rising potency of street seizures of cannabis
Have a look at slides 16-23 - CBD and THC
4. Dr Les King “Potency and UK market share of cannabis products”
He started by criticising the press for misquoting the findings of studies on strength.
Current Home Office summary will be completed in late March 2008 . In 2002 Sinsimmilla was 15% of the market, now it is 70-80%
5. Marije Wouters (Uni of Amsterdam) “Cannabis and smoking behaviour”
Ive found several research papers with her name on but cant find this one. Findings were of three cluster “types”
Cluster 1- Stongest high - mainly young males
Cluster 2 - Consistent high - moderate user group
Cluster 3 - Steady quantity - these aged 40+
Cluster 1 were found to have the greatest risk of dependence
SESSION 2 - CANNABIS AND POTENTIAL MENTAL HEALTH RISKS
6. Prof Glyn Lewis (Academic Unit of Psychiatry; Bristol University) “Cannabis Psychosis and depression
Looked at longitudinal studies .Talked about how the reseach was miquoted in the Mail which said that here is psychosis risk in one joint, which was a misquote.
He talked less about cannabis and depression - said there is less evidence and less conclusive
Conclusion from longitudinal studies : There is evidence that cannabis can lead to psychotic symptoms. Though one cannot be certain that the relationhsip is causal, there is now sufficient evidence to warn people that cannabis use could increase the risk of psychotic illness.
In answer to a question from ACMD member re doubling risk. He said if your risk is low doubling it is still not a great risk but if your risk is high - you’ve got a first degree relative who has schizophrenia - then doubling the risk makes the risk very big.
In response to another question he said the longitudinal stidies did not look at potency, they asked people if they used cannabis.
Dr Paul Morrison (dept of Psychological Medicine, King’s college London) “The acute effects fo THC and CBD”
Intravenous injection of THC to healthy adult volunteers. Double blind study. Effect on higher cognitive function - disassociation in the mind. Some of the volunteers were pretreated with CBD as well as THC and this did make a difference
This one matches what he reported ; but I cant find a reference with the results.
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The first study was filmed and will be on BBC3 soon.
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8. Dr Matthew Hickman (Centre for research on drugs and health behaviour; Bristol University) : “Cannabis use and schizophrenia”
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He said there is a lack of reliable data - a need to improve the data and the evidence base. Some studies say rate of schizophrenia have gone up others that it has gone down.
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9 Marjore Wallace (CEO of SANE) : “Cannabis : the collateral damage”
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She quoted newspaper articles and gave some case studies . Database of 100,000 caller to Saneline incuding an increasing number in which cannabis is quoted as an agrevating factor. She said she reluctantly wants it moved to Class B to counter mixed messages, and challenge signals being put out that it is soft and harmless. She said she has no wish to criminalise . She was asked if she wanted coffee houses, and she said no, better education.
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(As someone whose family has been affected by severe mental illness I agree with Marjorie Wallace that these illnesses can be awful for the for the sufferer and also their family. However, I did not like her saying “schizophrenics have useless lives” which is just not true - and I dont like language that denies the optimism that is important to recovery. If I misheard you Marjorie, I apologise)
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10 Paul Corry, Jane Harris and a carer (RETHINK)
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They presented Educating Reefer, which is available as a download. Definitely worth reading.
Rethink opposes reclassification to Class B . RETHINK wants to challenge resouces into education and research, not wasting money on reclassification. The are campaigning to have health warnings on Rizlas.
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11. Louis Appleby (National Director for mental health - dept of health) “Dual Diagnosis”
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He talked generally about Dual Diagnosis
Patient suicides - there are higher rates for those people with mental illness and a chaotic pattern of drug use, and cannabis is one of the drugs.
He also talked about use of street drugs on psychiatric wards
He said cannabis contributes to relapse and risk and health professionals have been complacent.. It is right to be cautions about any causal connection
Need for public health education and improved services
He said if it were moved ot B it would not reduce use. It could reinforce strong public health message. Regrading could lead to more powers against dealers (incuding those who hang around mental health units). But it could also mean mental health patients getting punishments. It is finely balanced
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Comment from an ACMD menber - the punishment for dealing would not change. And in reply to a question about alcohol, Louis Appleby said he could have given the same talk about alcohol - there is difficulty in disentangling .
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This is not his presentation powerpoint but it is relevant : and Ive found this very informative powerpoint about Dual diagnosis
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(In my opinion an understanding about Dual Diagnosis is important - people who have a mental illness and also use drugs get a very poor deal and are doubly stigmatised. And the relationship between the drug taking and the mental illness is never simple.)
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SESSION 3 - CANNABIS ; PHYSICAL AND HEALTH EFFECTS
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12 Dr Simon Thomas (Newcastle Regional Drugs and Therapeutics Centre) “The physical harms of cannabis use”
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He talked about chronic long term effects, but excluded the issues of psychological addiction and withdrawal.
He said cannabis smoke is similar to tobacco smoke. However it is smoked differently and also ingested in other ways.
He talked about respiratiory health and lung fuction and cancers pregnancy SIDS and mortality .
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I will email him and request references
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13
Andrew Clatworthy “Cannabis use and Road traffic accidents”
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With acohol there is a prescribed limit. No prescribed limit for drugs unless you say nil. Dont know the effects on driving ability
Canabis drivers are often stopped because the are drivng too slowly
Cannabis and alcohol - when the driver has taken cannabis a small amount of alcohol can have a significant effect on driving
Cannabis can affect driving -
poor road tracking performance
divided attention
traffic flow - it can affect perception of time and colour
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Again - I haven’t got his powerpoint so I will write to him for more information
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Debra Bell (TAC) “Cannabis and children : the damaging effects on families”
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Debra has he same concerns as I do about risk for children but we have very different ways of tackling them. She engages with those who supports her but does not with those who put across a different point of view. Her presentation also lacked evidence.
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I would be very happy to be part of a public debate with Debra Bell - “How do we cut the harm done by children and adolescent use of cannabis?” so we could both make a case for the way forward.
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15. Cindy Burnett (magistates association)
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She said downgrading to C sent out the wrong messages. Ther has be increased addction and increased criminal activity. She said It would be a positvie message to move it to B
She said she did not want young peple to be criminalisad.
She was asked a quesiton about how to deal with children qnd she said they should be helped before they come to court
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UK government department represeetatives from Home Office dept of health and dept for chidrens schoools and families “government responce and actions from 2005 ACMD Cannabis report : FRANK BCS
They presented different government initiatives including the Brain warehouse http://www.brainwarehouse.tv/ also radio ads “trip of a life time” “paranoia” “frank home grwon” and “frank whisperer”
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Prof Simon Lenton (National Drug Research INstitute, Australia “The impact of the legislative options for cannabis”
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here are some reference to Simon Lentons recent articles
He talked about the health issues and what is needed is public health approach not increased penalities
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Steve Rolles (Transform Informtion officer)
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TRANSFORM’s submission to ACMD is here
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Simon Byrne (Asst chilf constable Mersyside Police, ACPO lead on cannabis) Submission of evidence on the classification of cannabis
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The ACPO submission is here
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Prof Simon Lenton on behalf of the Beckley Foundation “Is cannabis us a contributory cause of psychosis? If so, what are the implicaitons for a risk classification of cannabis?
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21. Ipsos MORI “ACMD polling
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