Children under 9 are admitted to hospital with severe cannabis disorders.
More than 3,400 patients under the age of 19 were admitted last year because of drug-induced mental and behavioral diseases.
Doctors see a "new generation" with serious problems that are increasingly buying cannabis through social media websites.
James Hamilton, pictured at the age of 11 with a retired teacher Janie, became addicted to cannabis when he was 14 years old and developed psychosis and depression.
James died in July 2015 after refusing testicular cancer treatment
NHS figures show that the number of drug-related hospitalizations among adolescents aged 19 has increased by 38% since 2013/14 and by 10% in the past year.
While boys make up most of the cases, girls catch up.
And the numbers underestimate the scope of the problem because they only count those patients who were so well received for the department or specialized unit.
Revelations have emerged as evidence that caused the damage caused by super strong "skunk" forms of cannabis that are widely available in Britain.
Last week, a major study in Lancet Psychiatry revealed that strong forms of the drug increase the risk of psychotic disorders five times. Shocking 30% of new cases of psychosis in London are associated with cannabis cannabis, researchers at King's College London found.
A study published in Lancet Psychiatry last week found that stronger forms of the drug are associated with a fivefold increase in psychotic disorders.
Experts – and teenagers themselves – say that cannabis has become much more accessible through Instagram, Snapchat and Facebook in recent years.
Traders are openly advertised on websites. Many show photos of cannabis sacks and ready to ship.
Many children believe that cannabis is safer than alcohol, and that it is easier to obtain because they do not need an ID to buy.
Cannabis is associated with severe mental illnesses, including psychosis, where patients have hallucinations and delusional thoughts, schizophrenia, bipolar disorder and anxiety attacks.
Paul North, who worked for drug addiction treatment services in York and Leeds, and is now director of the independent think-tank Volteface, said: "The ease that young people can get drugs has massively increased.
“Social media is undoubtedly one of the most common ways to buy drugs. Instagram, Snapchat and Facebook – are very easy [use to] buy and sell drugs. There are plenty of different accounts that you can start tracking that will continually bring medicines for sale.
“It's a nightmare for the police and they just don't have the resources.
"If you are thinking about how drugs were given to children in the 1960s, 1970s and 1980s, you have to hang around and find a drug dealer. You have to go to the house and get to know them. What you can do now is get them on Instagram and get them to send or show them to you at home. "
Dr. Niall Campbell, a psychiatrist consultant at the Priory Hospital in London, who treats NHS patients, added, "We see a whole new generation of teenagers and those who are in the early 1920s who are being accepted as an emergency with cannabis-related paranoid psychoses. .
"He believes they're watching, watching, and listening to unidentified pursuers 24 hours a day who want to hurt or kill them." This can lead to violent or sometimes suicidal behavior when persecution officials flee.
“It's a continuing myth that cannabis smoking is harmless and can be beneficial. Many people see cannabis as something to help you cool – a medicine that, unlike alcohol and cigarettes, could even be good for your mental health. Statistics say the opposite. "
The Daily Mail NHS Digital figures show that 3,414 hospitalizations for cannabis mental and behavioral disorders were received in 2017/18 for women under the age of 19. There were two children under the age of nine.
Ian Hamilton, an assistant professor of mental health services at York University, said: "No matter where … cannabis is much easier than alcohol.
"The Home Office has legalized cannabis for medical purposes, and this report was completely verbal for young people." There is a message that cannabis is harmless and harmless. "
Dr. Derek Tracy, a psychiatrist at the Oxleas NHS Foundation Trust in South East London, has seen more young people with cannabis-related problems in the past three or four years.
He said, "While most people still get cannabis from their friends, there has been a transition to social media platforms like Snapchat. I think it changes the market. "
Figures show that the number of girls admitted to the age of 19 increased by 43% from 2014 to 2018, compared with 34% in boys. It comes in the middle of a long-standing debate over whether the UK should legalize cannabis for recreational use, after Canada and some US states.
Proponents – including former Conservative leader William Hague, former Lib Dems leader Nick Clegg and Sir Richard Branson entrepreneur – say the war on drugs has been "irreversibly lost". But opponents, including NHS England, chief Simon Stevens, claim that cannabis legalization would increase the level of serious mental illness.
Some critics say that the drug was decriminalized by stealth police, with a number of prosecutions for property falling by a fifth in two years.
A government spokesman said: "The government continues to invest in programs that have a positive impact on young people, giving them confidence and resistance to drugs."
The departments are full of lives destroyed by this evil drug
Dr. Max Pemberton for the Daily Mail
Walk to any mental health department and confront the tragic victims of our imperfect access to cannabis.
There is evidence that the drug has a terrible effect on the young, not least the inconvenient story of Mail. One third of the cases of psychosis in London are, according to the research, the result of a skunk smoking. Another Oxford University study has shown that it increases the risk of depression in adolescents by 40%.
They join hundreds of other studies that show that people who would not believe they would be harmless would believe that cannabis is a dangerous, harmful intoxication agent that has a profound effect on the structure and function of the brain.
Walk to any mental health department and confront the tragic victims of our imperfect access to cannabis
Cannabis is particularly dangerous for the developing minds of young people, and yet this group is most likely experimenting with drugs. Cannabis use has been shown to be associated with depression, anxiety, psychosis and avidity or poor motivation.
It is a bitter irony that, like us as a society, we are increasingly understanding mental illnesses and showing more interest and awareness, a drug that is directly responsible for destroying people's mental health can become so widespread. Particularly frustrating are the smug, aging, liberal types who smoked the drug in the sixties, seventies, and eighties and claim that because they're still here, they must be fine. They do not realize that not only have many people not done it unscathed in the 1960s and 1970s, but also that the super-powerful cannabis skunk on the streets today is completely different from what was 15 years old, let alone 30 years.
Even more bizarre, the police are looking more and more relaxed. We are not trying to enforce the cannabis law, which means that parents who courageously try to divert their children do not support the criminal justice system. I remember visiting a young man whose parents were concerned about his mental health. She and her family waited nervously in the lounge downstairs, tentatively going up the stairs and opening the bedroom door to find that she was crouching in the corner, a carpet dotted with hundreds of lit cigarettes and pieces of paper from newspapers that covered the floor. .
Cannabis is particularly dangerous for the developing minds of young people, and yet this group is most likely experimenting with drugs
He was convinced that the devil had it and the demons told him to kill himself. Eventually he was separated and sent to a psychiatric hospital, another broken mind to join those who had lost the drug.
Both parents agreed that he had begun to change soon after joining GCSE. He started using a skunk and rarely came out of his room. It was only a matter of time before he ended up in the hospital.
The departments are dotted with similar examples of lives destroyed, sometimes for a short time, sometimes permanently. I have seen dozens of people who have become cannabis psychotic users, and their numbers have increased recently because stronger forms have become more accessible.
The lives destroyed by cannabis are not exposed to everyone to see because they are locked in psychiatric hospitals.
TEAM MUMA WARNING: STOP THE RUSSIAN ROULETTE
CANNABIS TOLL 1
James Hamilton became a cannabis addict at the age of 14 and developed psychosis and depression.
His parents believe he was familiar with the drug to his friends who stayed with his aunt. They found out when he was 15 years after his behavior became erratic.
James was later diagnosed with paranoid schizophrenia and died in July 2015 at the age of 36 after rejecting testicular cancer. His mother, Janie Hamilton, 67, from North Dorset, said young people "play Russian roulette" with their mental health.
Retired teacher added, "It is true that some people will use it and get away from it. But when young people experiment with drugs, they won't know until it's too late. And these effects are often not reversible and they may face mental illness for the rest of their lives.
"You can look at your friend and think they're fine when he smokes him, but the damage is a slow burner and it may be that they are already affected."
Mrs. Hamilton, who runs campaigns in schools to emphasize the dangers of cannabis, said her son is a "brilliant writer", "funny," and dreamed of being a journalist.
CANNABIS TOLL 2
KATIE started smoking cannabis when she was twelve. At age 13, she spent 30 pounds a day on a drug, paid through her children's savings account.
She is now 17 and has not used the drug in two years. After smoking a joint that was enriched with another substance, she suffered a severe reaction.
Katie from North Yorkshire said, "I talked to a lot of older people. They knew about the people who dealt with him, and so I could get the dealer numbers.
“I noticed that I was really paranoid when I was about 13 years old.
“I was used to being really angry.
"Now people are setting up Snapchat and Instagram accounts and advertising them there."