Fair enough, cannabis does have physical effects:
Smoking cannabis for long periods of time may shrink parts of the brain that govern memory, emotion and aggression, according to researchers in Australia. Scientists used magnetic resonance imaging to scan the brains of people who admitted to smoking more than five joints a day for at least 10 years and compared them with brain images taken from non-drug users.
Those who smoked cannabis regularly had on average a 12% smaller hippocampus, the part of the brain which is thought to be involved with emotion and memory, and a 7% smaller amygdala, which plays a role in regulating fear and aggression.
Now I\’m certainly no expert on dosages but 5 joints a day for a decade….that\’s pretty heavy usage isn\’t it? What would we say it is in comparison to alcohol? A bottle of spirits a day? More?
And at that sort of level we\’d expect to find some physical effects of alcohol consumption, wouldn\’t we?
Do we use the incidence of cirrhosis to ban alcohol? No, but I\’m sure someone will try to use this paper on cannabis to continue the ban on that.
Last month, a team at New York University scanned the brains of a group of 17- to 30-year-olds who had smoked cannabis two to three times a week for at least a year. In that study, the brains of drug users looked no different from those who had never taken cannabis.
As we\’ve known sinice Paracelsus, the poison is the dise.