Navigation Links
Claims linking health problems and the strength of cannabis may be exaggerated
Date:6/17/2008

Claims that a large increase in the strength of cannabis over the last decade is driving the occurrence of mental health and other problems for users are not borne out by a study of the worldwide literature, say researchers at the National Drug and Alcohol Research Centre (NDARC) and the National Drug Research Institute (NDRI), both from Australia.

Their conclusions, published in this month's issue of ADDICTION, are that increased potency has been observed in some countries, but there is enormous variation between samples, meaning that cannabis users may be exposed to greater variation in the strength of the cannabis they use in a single year than over years or decades.

Cannabis samples tested in the United States, the Netherlands, the United Kingdom and Italy have shown increases in potency over the last decade, but no significant growth in other European countries or in New Zealand has been found during the same period.

THC is the active ingredient in cannabis, which produces the strongest psychoactive effect. In the United States, the level of THC in confiscated cannabis was 8.5% in 2006, up from 4.5% in 1997. Recent Dutch data show that the THC of cannabis sold in coffee shops more than doubled between 2000 and 2004, but has since levelled off.

THC content varies according to the part of the plant that is used, the method of storage, and cultivation techniques. Popular belief is that hydroponic or other methods of indoor cultivation produce higher concentrations of THC than occur naturally, but the jury is still out on this issue.

The ability to control the indoor environment means that plants can reach their full potential, which includes reaching the maximum level of THC. The increase in market share of indoor-grown cannabis seen in Australia as well as North America and Europe may have led to a more consistent product which could explain the potency increases reported in some countries.

While some public debate has linked large increases in cannabis potency to increased mental health problems, there are currently insufficient data to justify this claim, and care ought to be taken when considering policy decisions on this basis. Importantly, further research is required to understand whether cannabis users can, or do, alter their intake in response to a change in potency.

In their discussion of potential health risks, the authors point to studies that observe that some cannabis smokers, when faced with a 'strong' product, act rather like tobacco smokers and adjust their dose by increasing the interval between puffs, or holding smoke in their lungs for a shorter period of time. This behaviour may reduce possible harms caused by increased potency.

The authors also discuss the health risks of contaminants. Possible contaminants include naturally occurring ones such as fungi; growth enhancers and pesticides; and substances added for marketing purposes to 'bulk up' the weight. Lack of systematic monitoring for contaminants makes an assessment of risk difficult; it is important to learn more about the health risks of cannabis of ingesting contaminated cannabis for example, moulds are known to cause respiratory problems and lung disease.

The authors say "Given the relatively high prevalence of cannabis use it is important we have current, accurate information to help users make informed decisions about their use, and that policy development and media debate about the health harms associated with its use are guided by research evidence rather than rumour."


'/>"/>

Contact: Susan Savva
susan@addictionjournal.org
44-207-848-0853
Wiley-Blackwell
Source:Eurekalert

Related medicine news :

1. AHIP Statement on American Medical Association (AMA) Claims Processing Report
2. AMA Launches Campaign to Cut Waste From Chaotic Insurance Claims Process, Unveils New Health Insurer Report Card
3. EDS Selects Edifecs Healthcare Accelerator Suite for Claims Processing Solution
4. New Data Shows Continued Growth of Long-Term Disability Claims and Decline in Social Security Disability Insurance Applications Approval Rate
5. Florida Hospital Group Pays U.S. $7,775,000 to Settle False Claims Act Allegations
6. INETICO, Inc. Creates Data Interface with TPABenefits, Inc. Offering a Powerful Care and Claims Management Solution
7. Claimsnet.com Reports First Quarter 2008 Results
8. McKesson Corporation Agrees to Pay More Than $13 Million to Settle Claims That It Failed to Report Suspicious Sales of Prescription Medications
9. Mayor Bill White Proclaims World Day of Design in Houston
10. SEIU Claims Right of Free Speech to Stalk, Harass, and Threaten Registered Nurses According to the California Nurses Association
11. Florida Radiologist to Pay U.S. $7 Million to Resolve Fraud Claims
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/23/2017)... , ... June 23, 2017 , ... Military Connection ... recently denied entry to the JFK Virgin Atlantic lounge. , Bensko is no ... wheelchair six years ago, Bensko dedicated her life to supporting our wounded veterans. A ...
(Date:6/23/2017)... , ... June 23, 2017 , ... ... is essential, and two new videos highlight the importance of correctly using a ... Bruhn, Ph.D., who has done extensive research on consumer food safety habits. Dr. ...
(Date:6/23/2017)... ... June 23, 2017 , ... PureLife Dental is pleased to ... supplier for CDA members. As part of the amalgam separator endorsement, all CDA members ... more than $400 off the retail value. This partnership between PureLife and CDA is ...
(Date:6/23/2017)... ... June 23, 2017 , ... The ... related services to families and business owners in and around Lackawanna County, is ... senior citizens in the area. , Meals on Wheels of NEPA provides hand-delivered ...
(Date:6/23/2017)... ... June 23, 2017 , ... Moore Insurance, an ... with access to asset protection and financial planning services, is teaming up with ... the lives of children with cancer and other chronic diseases. , The For ...
Breaking Medicine News(10 mins):
(Date:6/14/2017)... 2017  In 2016, Embodied Labs took ... competition and came away with $25,000 in seed-fund investment. ... Forbes as "entering the life of another" and by ... "empathy to medical professionals in an entirely new dimension." ... a finalist for the Department of Education,s EdSimChallenge, where ...
(Date:6/10/2017)... Burchfield, DPM, is recognized by Continental Who,s Who as a Pinnacle ... Alabama . Dr. Burchfield serves as a ... 20 years of experience, as well as expertise in the areas ... "The podiatry professional   ... welcome you to his practice," the company,s website states. "We want ...
(Date:6/8/2017)... , June 8, 2017   Responding to Heath ... and the death of singer Chris Cornell in ... Rights International offers a free online psychiatric ... consumers and families about psychotropic drug risks. ... who died from an accidental overdose, has called for tighter ...
Breaking Medicine Technology: