Dagga doesn’t adversely affect teen IQ (but cigarettes do), concludes new study

Dagga does not negatively affect school marks or the IQ of teenagers, concludes a new study of 2235 adolescents published in the UK Journal of Psychopharmacology.

The scientists, however, found a “robust” link between smoking cigarettes and lower educational performance.

“These findings suggest that adolescent cannabis use is not associated with IQ or educational performance once adjustment is made for potential confounds, in particular adolescent cigarette use,” the scientists who performed the study said.

The study made headlines this past week, particularly in the US (where a number of states have legalised dagga) and the UK (where support for legalisation is growing).

Click here to read the report and here to learn more about the UK Journal of Psychopharmacology (published on behalf of the British Association for Psychopharmacology).


This article first appeared on 702 : Dagga doesn’t adversely affect teen IQ (but cigarettes do), concludes new study


CapeTalk welcomes all comments that are constructive, contribute to discussions in a meaningful manner and take stories forward.

However, we will NOT condone the following:

  • Racism (including offensive comments based on ethnicity and nationality)
  • Sexism
  • Homophobia
  • Religious intolerance
  • Cyber bullying
  • Hate speech
  • Derogatory language
  • Comments inciting violence.

We ask that your comments remain relevant to the articles they appear on and do not include general banter or conversation as this dilutes the effectiveness of the comments section.

We strive to make the CapeTalk community a safe and welcoming space for all.

CapeTalk reserves the right to: 1) remove any comments that do not follow the above guidelines; and, 2) ban users who repeatedly infringe the rules.

Should you find any comments upsetting or offensive you can also flag them and we will assess it against our guidelines.

CapeTalk is constantly reviewing its comments policy in order to create an environment conducive to constructive conversations.

Read More
How to overcome the fear of failure (and other tips from a serial entrepreneur)

How to overcome the fear of failure (and other tips from a serial entrepreneur)

Nic Haralambous knows a thing or three about starting a small business with almost no money. He offers this advice…

What a three-way Olympic swimming tie says about our strange measuring system

What a three-way Olympic swimming tie says about our strange measuring system

The metric system defines the world around us, but those definitions are not what you think they are.

Meet Keith Kirsten, guru of gardening and world-renowned horticulturist

Meet Keith Kirsten, guru of gardening and world-renowned horticulturist

Bruce Whitfield interviews Kirsten about his 30-year-long career and his new franchise concept, Keith Kirsten Garden Centre.

How a single township internet café grew into a nationwide IT franchise business

How a single township internet café grew into a nationwide IT franchise business

Meet the inspirational Luvuyo Rani, Social Entrepreneur of 2016. Learn about his fascinating business and the lives he’s changing.

Auschwitz concentration camp liberated on this day (27 January) in 1945

Auschwitz concentration camp liberated on this day (27 January) in 1945

The Red Army liberated Auschwitz - Nazi Germany’s largest concentration camp – on this day, 72 years ago.

Washington DC, Oregon and deeply conservative Alaska legalise dagga

Washington DC, Oregon and deeply conservative Alaska legalise dagga

Washington DC, Oregon and the deeply conservative Republican stronghold of Alaska just legalised the recreational use of dagga.

Popular articles
Fund manager lays criminal charges against former Steinhoff CEO Markus Jooste

Fund manager lays criminal charges against former Steinhoff CEO Markus Jooste

The Money Show’s Bruce Whitfield interviews Benguela Global Fund Managers Chief Investment Officer Zwelakhe Mnguni.

France exploring ways to assist City of Cape Town with water crisis

France exploring ways to assist City of Cape Town with water crisis

Xanthea Limberg says no formal agreement has been reached but it looks forward to talks and learning more from France.

'ANC may split if Dlamini-Zuma is elected leader'

'ANC may split if Dlamini-Zuma is elected leader'

Political analyst Dr Somadoda Fikeni sat down with Ray White to discuss the future of the ANC.

'This puts pressure on Jacob Zuma to vacate office earlier'

'This puts pressure on Jacob Zuma to vacate office earlier'

The Money Show’s Bruce Whitfield interviews Daniel Silke, Political Economy Analyst at Political Futures Consultancy.

Predictably awesome new Nando's ad reminds South Africans ‘we can fix our sh$t’

Predictably awesome new Nando's ad reminds South Africans ‘we can fix our sh$t’

Watch the Guptas pack their bags and run in Nando's inspiring new advertisement.