Why is cannabis addictive? Study finds drug deadens reward centre of brain making smokers want more
19:05, 6 JUL 2016UPDATED 19:07, 6 JUL 2016BY STEPHEN JONES
Some people think smoking the Class B drug is not addictive and should be legalised - while opponents argue it's a gateway to harder drugs
Cannabis has an unusual affect on the brain
Smoking cannabis deadens the brain's reward centre hormone and makes them want more to 'feel good' - increasing the risk of addiction - a study shows.
Some people think smoking the Class Bdrug is not addictive and should be legalised - while opponents argue it's a gateway to harder drugs.
Now a new study has found the drug dulls the release of hormone dopamine meaning users have to smoke more to get the same feeling.
The changes increase the risk of getting addicted to marijuana - or other drugs, experts say.
Smoking cannabis makes the brain want more to 'feel good'
Neuroscientist Dr Mary Heitzeg, of Michigan University, said: "Some people may believe marijuana is not addictive or it's 'better' than other drugs that can cause dependence.