Marijuana and psychosis
Does long term use of marijuana lead to mental illness? There have been concerns raised about a possible link between marijuana and psychotic illnesses such as schizophrenia.
It is argued that people who are psychologically vulnerable or have a family history of diseases such as schizophrenia are more likely to develop this as a result of using marijuana.
The main argument centres on psychosis and whether there is an association between this and marijuana use.
What is psychosis?
This is a psychiatric term for a condition in which someone appears to have lost all connection with reality. They are displaying an abnormal state of mind and exhibit the following symptoms:
- Personality disorder
- Paranoid delusions
- Abnormal or ‘weird’ behaviour
Someone who displays any of these is considered to be psychotic.
There are various causes of psychosis which include drug abuse, brain tumour, brain injury, severe stress and manic depression (bipolar disorder).
Someone who has an ‘addictive personality’ or a genetic predisposition to mental illness is more likely to have a negative experience with marijuana.
It appears to be the case that marijuana worsens existing mental health conditions such as schizophrenia. So if you have already been diagnosed with this then marijuana may exaggerate the symptoms.
But, there is little evidence to show that marijuana causes schizophrenia or is likely do so in people who have used it over a long period of time (or are heavy users).
(Source: DrugScope: Re: the Advisory Council on the Misuse of Drugs: Jan 2006).
More research is needed to determine if there is a link between marijuana and psychosis.
Guide to Marijuana
- Guide to Marijuana
- What is marijuana?
- Short history of marijuana
- How is marijuana used?
- Types of marijuana
- Herbal cannabis (marijuana)
- Cannabis oil
- Genetic predisposition and marijuana
- Addiction and marijuana
- Effects of marijuana
- Short term effects of marijuana
- Long term effects of marijuana
- Physical effects of marijuana
- Marijuana and the brain
- Marijuana and the heart
- Marijuana and the lungs
- Marijuana and fertility
- Psychological effects of marijuana
- Marijuana and memory
- Marijuana and learning
- Marijuana and social behaviour
- Marijuana and psychosis
- Marijuana and insomnia
- Marijuana and anxiety
- Marijuana and depression
- Marijuana and cancer
- Marijuana and pregnancy
- Medical use of marijuana
- The law and marijuana
- Young people and marijuana
- Treatment for marijuana addiction
- Marijuana facts and fiction
- Marijuana FAQs