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:3/23/2017)... ... ... The physicians of KSF Orthopaedic Center PA are proud to announce the opening ... at 2255 E. Mossy Oaks Rd., Suite 440, Spring, Texas 77389 inside the new ... in the north Houston area (The Woodlands, Conroe, Magnolia, Kingwood, Humble) with an even ...
(Date:3/23/2017)... ... March 23, 2017 , ... PAINWeekEnd ... at 10 North Broadway Avenue, will be an educational and exciting program providing ... in the management of chronic pain. , Oklahoma is in a healthcare crisis. ...
(Date:3/23/2017)... ... ... of adults are unaware of the dangers that infectious bacteria play in mouth disease, while ... a day that dentists recommend. The ramifications of improper oral upkeep go far beyond bad ... 164 million hours of work each year due to dental issues. That is why Mediaplanet ...
(Date:3/23/2017)... ... March 23, 2017 , ... Benefits delivery trailblazer, ... mobile app and centralized benefits dashboard solving one of the top frustrations in ... locations. For the first time, employees can access up-to-date information and account balances ...
(Date:3/23/2017)... Malvern, PA (PRWEB) , ... March 23, 2017 ... ... a comprehensive educational training program owned and organized by HMP Communications Holdings, LLC, ... training program for physicians within its nationwide network of wound centers interested in ...
Breaking Medicine News(10 mins):
(Date:3/23/2017)... The key factors driving the growth of dialysis ... growth and increasing healthcare expenditure. Some of the noteworthy trends ... ESRD patients, rising demand for home PD treatment and huge ... market is hindered by high treatment costs and stringent regulations. ... Complete ...
(Date:3/23/2017)... March 23, 2017  Transportation Insight, a multi-modal lead ... supply chain management firm with expertise serving clients in ... Rick Zaffarano was named a 2017 ... Chain by the only publication exclusively dedicated to covering ... chain. "Rick has brought to Transportation Insight ...
(Date:3/23/2017)... INDIANAPOLIS , March 23, 2017  Eli ... the William Sansum Diabetes Center have established a research ... by diabetes through enhanced research, education and care. ... disease bears a disproportionate weight on Latino families in ... David Kerr , M.D., FRCPE, director of Innovation and ...
Breaking Medicine Technology: