Cannabis Is Not A Safe Drug

According to experts at the UK Border Force, seizures of Cannabis in the 90s contained approximately 4% tetrahydrocannabinol (THC), the psychoactive ingredient which produces the high while today the average THC level of seizures is at least four times higher at 16%.
You can generally tell a long term cannabis smoker because their brains are just that little bit slower, a fraction of a second to react and my own back of a fag packet reading is  backed by the overwhelming evidence from mental health professionals that smoking cannabis, particularly in your teenage years, there is a risk of mental health problems.
Cannabis was always considered a soft drug, far less dangerous than hard drugs like heroin and cocaine but even back then i remember talking to Mental Health staff who said that the reputation of cannabis as harmless was just plain wrong.
I have a lot of time for the leader of the Green Party, Zack Polanski, but his call to legalise cannabis which he states he has never tried, is just all kinds of ignorance.
A psychiatrist leading an early intervention in psychosis team at the Institute of Psychiatry in London, said that studies show that 'if the risk of schizophrenia for the general population is about 1%, the evidence is that, if you take ordinary cannabis, it quadruples to 4% and if you smoke the strongest strain (above 10% THC), you push it up to 8%'.
Data from 11 countries in Europe found that regular users of cannabis containing 10% THC were five times more likely than non-users to develop psychosis and severe mental damage in cannabis-consuming teenagers whose brains are still developing, were 11 times more likely to suffer a psychosis than non-users. In Denmark, researchers estimated that of male patients between 21 and 30 who suffered from schizophrenia, up to 30% of the cases were due to cannabis use.
The evidence for the cannabis-psychosis connection is now as strong that to call for making Cannabis legal and more freely available is downright dangerous and foolhardy.
as  the legalisation of cannabis legitimises it and sends a message that the government views it as relatively harmless whereas the message should be that cannabis can send you insane.