In conclusion, it would not please the government, which legalized recreational use of marijuana, the study found that about one third of psychotic disorders in London due to the use of cannabis.
A study in the Lancet concluded that daily intake of cannabis three times the risk of developing mental disorders.
"But using forms with high levels of the active THC ingredient of the users are five times more likely to be affected," said the Christian Institute, which reported the results.
The study explains: "In the period from May 1, 2010 and April 1, 2015, we received data from 901 patients with a first episode of psychosis at 11 sites and 1237 population controls from the same place. Daily marijuana use is associated with an increased coefficient of a psychotic disorder compared to never-users. "
The chances were almost five times higher "for daily use of high-potency cannabis" in the study.
the incident rate for the "psychotic disorder were positively correlated with the incidence in the control group over 11 sites use high-potency cannabis … and daily use," he said.
The study said: "The difference in the frequency of daily cannabis use and the use of high-potency cannabis has contributed an amazing change in the frequency of psychotic disorders in 11 sites studied. Given the increase in the availability of high-potency cannabis, it is important for public health. "
The researchers said that in the "context of a well-reviewed epidemiological and biological evidence of a causal link between heavy cannabis use and psychotic disorders, our results are essential for mental health services and public health."
"Education is necessary to inform the public about mental health risks of regular use of high potency cannabis, which is becoming more accessible worldwide."
The BBC reported lead researcher March Dee Fort warned, "If you choose to use high-potency cannabis bear in mind that there is a potential risk."
"People who experience psychosis lose touch with reality, and may hear voices, see things that do not actually exist or have Var & # 39; yatskiya, confusing thoughts. He & # 39; is a recognized medical condition and different from the buzz of drugs », BBC said.
Researchers from King's College London, have shown that even the removal of the most powerful forms of drugs will reduce the number of "psychosis" cases.
The Guardian, London reported powerful hemp, such as skunk "level are substance tetrahydrocannabinol (THC) is higher than 10%."
The representative of the Ministry of Interior said: "No banned drug may not be safe, because there is no safe way to take them. Drugs can ruin lives, ruin something & # 39; nd and damage to the community. "
Former Metropolitan Police Chief Bernard Hogan-Howe said earlier after the legalization of cannabis in Canada and some states that the United Kingdom should reconsider its position in relation to drugs.