A new study suggests that teenagers who smoke pot regularly might be permanently losing a few points off of their IQ.
As the Associated Press explains:
.. participants were tested for IQ twice in the study: once at age 13, and once at age 38. Based on a series of interviews conducted with the participants over time, researchers found that those who used marijuana regularly before the age of 18 showed a drop in IQ score. The same drop in IQ wasn’t found for those who began to smoke up regularly after 18.
In a nutshell, the more the participants smoked before age 18, the heavier the IQ loss was recorded by researchers. The participants ranged from heavy users to occasional smokers. Among the teenagers who smoked more than 4 times a week, the average drop in IQ was 8 points.
The findings seem to validate the stereotype that has been associated with “stoners” for many years.