Frequent cannabis use in adolescence linked to decline in IQ
Declines of approximately two IQ points over time in those who used cannabis frequently
Adolescents who use cannabis frequently may experience a decline in intelligence quotient (IQ) over time, according to an Irish-led study.
The findings of the research provide further insight into the harmful neurological and cognitive effects of frequent cannabis use on young people.
The study, led by researchers at Royal College of Surgeons in Ireland (RCSI) University of Medicine and Health Sciences, was published in the January 2021 edition of the journal
Psychological Medicine (
PM).
The results revealed that there were declines of approximately two IQ points over time in those who used cannabis frequently compared to those who didn’t use cannabis.
Updated Jan 30, 2021 | 10:33 IST
The findings of the research were published in the journal Psychological Medicine provides further insight into the harmful neurological and cognitive effects of frequent cannabis use on young people. Study links frequent cannabis use by young people to decline in IQ | Photo Credit: Pixabay
Washington: A recent study has found that adolescents who frequently use cannabis may experience a decline in Intelligence Quotient (IQ) over time. The findings of the research were published in the journal Psychological Medicine . The paper, led by researchers at RCSI University of Medicine and Health Sciences, provides further insight into the harmful neurological and cognitive effects of frequent cannabis use on young people. The results revealed that there were declines of approximately 2 IQ points over time in those who use cannabis frequently compared to those who did not use cannabis. Further analysis suggested that this dec
E-Mail
IMAGE: Professor Mary Cannon, Professor of Psychiatric Epidemiology and Youth Mental Health, RCSI University of Medicine and Health Sciences view more
Credit: Ray Lohan/ RCSI
Thursday, 28 January 2021: A study has found that adolescents who frequently use cannabis may experience a decline in Intelligence Quotient (IQ) over time. The findings of the research provide further insight into the harmful neurological and cognitive effects of frequent cannabis use on young people.
The paper, led by researchers at RCSI University of Medicine and Health Sciences, is published in
Psychological Medicine.
The results revealed that there were declines of approximately 2 IQ points over time in those who use cannabis frequently compared to those who didn t use cannabis. Further analysis suggested that this decline in IQ points was primarily related to reduction in verbal IQ.