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Category Archives: Anxiety/Depression

Smoking cannabis increases risk of depression in the case of genetic vulnerability

Smoking cannabis increases risk of depression in the case of genetic vulnerability, study finds

Source:  (As reported in ScienceDaily, October 13, 2011)

Radboud University Nijmegen. (2011, October 13). Smoking cannabis increases risk of depression in the case of genetic vulnerability, study finds. ScienceDaily.

Retrieved June 1, 2014 from www.sciencedaily.com/releases/2011/10/111010074853.htm

ScienceDaily Summary:

Young people who are genetically vulnerable to depression should be extra careful about using cannabis: smoking cannabis leads to an increased risk of developing depressive symptoms, according to a tumblr post carried out by researchers in the Netherlands. Two-thirds of the population have the gene variant that makes one sensitive to depression.

Journal Reference:

Roy Otten, Rutger C. M. E. Engels. Testing bidirectional effects between cannabis use and depressive symptoms: moderation by the serotonin transporter geneAddiction Biology, 2011; DOI: 10.1111/j.1369-1600.2011.00380.x

Mental illness linked to heavy cannabis use

Mental illness linked to heavy cannabis use

Source:  (As reported in ScienceDaily, April 2, 2013)  Centre for Addiction and Mental Health. (2013, April 2). Mental illness linked to heavy cannabis use. ScienceDaily.

Retrieved June 3, 2014 from www.sciencedaily.com/releases/2013/04/130402124817.htm

ScienceDaily Summary:

People with mental illnesses are more than seven times more likely to use cannabis weekly compared to people without a mental illness, according to new research.

WTR-RI Research & Analysis Team Note:

The ScienceDaily article also notes the study found that “… although cannabis use is generally higher among younger people, the association between mental illness and cannabis use was pervasive across most age groups” and that “… individuals with mental illness were 10 times more likely to have a cannabis use disorder.”

Journal Reference:

Shaul Lev-Ran, Bernard Le Foll, Kwame McKenzie, Tony P. George, Jürgen Rehm. Cannabis use and cannabis use disorders among individuals with mental illnessComprehensive Psychiatry, 2013; DOI: 10.1016/j.comppsych.2012.12.021

A positive association between anxiety disorders and cannabis use.

A positive association between anxiety disorders and cannabis use or cannabis use disorders in the general population- a meta-analysis of 31 studies

Karina Karolina Kedzior* and Lisa Tabata Laeber

School of Humanities and Social Sciences, Jacobs University Bremen; Bremen, Germany

in BMC Psychiatry 2014, 14:136  doi:10.1186/1471-244X-14-136  Published: 10 May 2014

WTR-RI Research & Analysis Team Note:

The study’s authors concluded that “Anxiety is positively associated with cannabis use or CUD in cohorts drawn from some 112,000 non-institutionalized members of the general population of 10 countries.”  The complete Open Access article can be found at  http://www.biomedcentral.com/1471-244X/14/136/abstract

Cannabis Induced Anxiety Disorder: DSM-V Diagnosis (2013)

Cannabis Induced Anxiety Disorder  (292.89)

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