When saline was substituted for the cocaine, the monkeys stopped pressing the lever. The researchers also showed that the monkeys' compulsion for THC was reduced when they were given a second drug that blocks receptors on the cannabinoid receptors in the brain. We found the levels of behaviour were identical in the two groups of animals. Dr Goldberg admitted that his research could not take into account the social factors that would inevitably come into play when assessing the potential for abuse of cannabis among human users. However, Dr Lester Grinspoon, a Harvard Medical School emeritus professor of psychiatry, dismissed the idea that the study proved that cannabis was addictive.
Clinical experience says that.
Should that be the case then I believe that governments across the world will change their minds and make the use of cannabis for medicinal use legalised. Professor Moffat said the trials were designed to ascertain the right dose for patients to take so that the beneficial effects outweighed the possible side effects. UK Prime Minister Tony Blair has ruled out legalising cannabis for social use.