According to the largest study to test the effect of marijuana on psychological disorder rates, smoking every day can increase the development of high-energy-intensity psychotherapy every day every five years.
Research adds to previous studies that clues between marijuana and mental health problems have been found, but still still do not direct to marijuana for that reason.
Psychological disorders – in which people lose contact with reality – usually triggers by factors including genetic and environmental. But experts say that the findings of new study have implications for jurisdiction to legalize Dago, warns that they should take into account the potential impact on mental health services.
"If we think there is something special about (high power) cannabis, hard work to catch it can be a measure of a useful loss-reduction," said Suzanne Gage of Liverpool University, a new study.
In King's College London and elsewhere, researchers analyzed data from dozens of European and Brazilian sites from 2010 to 2015. Approximately 900 people who diagnosed the disorder's first episode in the Mental Health Clinic, which included illusions and delusional people, were compared. With 1 to 200 healthy patients.
After conducting surveys about patients' use of diarrhea and other medicines, researchers have found that the use of marijuana was more common in patients with the first episode of psychotherapy compared to a healthy, control group.
Scientists have estimated that people who smoke marijuana on a daily basis are three times more likely to be diagnosed with mentality than those who have never used drugs. The risk for people who use high-powered marijuana daily increases by about five times.
This paper was published online last week by the journal Lancet. It was paid by funds from Britain's Medical Research Council, São Paulo Research Foundation and Wellcome Trust.
"If you decide to use high-powered marijuana, then you should keep in mind: Psychosis is a potential risk," said Dr. King's College of London. Marta de Forti and the lead author of the study said. She said that people did not know how often low-powered marijuana can smokers without increasing the likelihood of anonymity, but there is no risk to less risk of using less weekly use.
De Forty and his colleagues estimated that in Amsterdam, about half of all new psychoanalysis cases were associated with smoking high-powered stigma.
Gage noted that it is possible that people with family history of mental illness or other hazardous factors may be more susceptible to developing problems such as mentality or schizophrenia if they use cannabis.
"It can be a thing that scales the suggestions for some people," she said. "Cannabis can be an extra risk factor for them, but it's not necessary to be involved in it. If you use cannabis, it does not mean that you are definitely going to develop psychotherapy."