Young skunk smokers risk damage to IQ.
SMOKING strong skunk cannabis just once a week can damage the intelligence of teenage users, research shows.
And those who become addicted can lose an average of six IQ points by adulthood, a US study found. Brain scans on users aged 16 to 19 also revealed abnormalities in areas associated with a decline in perception, intuition, paying attention and retaining memories.
Dr Krista Lisdahl, of University of Wisconsin-Milwaukee, said: "Regular cannabis use - once a week - may result in addiction and neurocognitive damage, especially in youth."
Skunk has a much higher level of psychoactive chemicals than ordinary cannabis, used in previous tests.