A new study says that heavy marijuana use could lower your IQ by an average of four points.
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According to a CMAJ study, smoking more than five times per week can have a measurable effect on your intelligence.
Canadian researchers have assessed how IQ changes after smoking cannabis.
The eight-year study at Carleton University, Ottawa, published in the Canadian Medical Association Journal, involved 70 children.
They were first tested between nine and 12 years old and again at 17 to 20. The IQs of those who smoked more than five joints a week dropped by an average of four points.
Such an effect could dramatically increase the number of people considered to have low intelligence, if they all smoked cannabis.
Study author Dr. Peter Fried said that, individually, a four point fall might not be very noticeable.
Regardless of what the study says, it’s important to remember that too much of anything is hazardous to your health. If you use the plant, don’t abuse it!
SOURCE: CMAJ
