Latest science shows there is no relationship between cannabis use and lower IQ

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The evidence mounts up ….
“In particular alcohol use was found to be strongly associated with IQ decline,” the authors wrote in a press release cited [3] by The Washington Post. “No other factors were found to be predictive of IQ change.”

Patients for Medical Cannabis

From Alternet

Moderate cannabis consumption by young people is not positively associated with changes in intelligence quotient (IQ), according to data[2] presented this week at the European College of Neuropsychopharmacology annual congress in Berlin, Germany.

Investigators at the University College of London analyzed data from 2,612 subjects who had their IQ tested at the age of eight and again at age 15. They reported no relationship between cannabis use and lower IQ at age 15[3] when confounding factors such as subjects’ history of alcohol use and cigarette use were taken into account.

“In particular alcohol use was found to be strongly associated with IQ decline,” the authors wrote in a press release cited[3] by The Washington Post. “No other factors were found to be predictive of IQ change.”

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