Growing Evidence , Supports Marijuana's Link , to Mental Health Risks .br NBC reports that a growing number of experts have raised br serious concerns regarding the mental impact of marijuana br use by adolescents and young adults reaching record highs.br Dr. Ryan Sultan, an assistant professor of clinical psychiatry br at Columbia Irving Medical Center, is one of the experts br speaking out about the risks associated with marijuana use.br Of all the people I’ve diagnosed br with a psychotic disorder, I can’t br think of a single one who wasn’t br also positive for cannabis, Dr. Ryan Sultan, Assistant professor of clinical br psychiatry at Columbia Irving Medical Center, via NBC.br NBC reports that evidence is growing of marijuana's br link with psychiatric disorders that include br depression, bipolar disorder and schizophrenia.br A new study highlights concerns that heavy use br of high-potency cannabis could worsen an br ongoing mental health crisis in young adults. .br A new study highlights concerns that heavy use br of high-potency cannabis could worsen an br ongoing mental health crisis in young adults. .br There is a big sense of urgency not br just because more people are smoking br marijuana, but because more people br are using it in ways that are harmful, with br higher and higher concentration of THC. , Dr. Nora Volkow, Director of the National br Institute on Drug Abuse (NIDA), via NBC.br Another study by researchers in Denmark and br the U.S. National Institutes of Health found br a link between cannabis use and schizophrenia. .br The findings, which were published in the journal br 'Psychological Medicine,' were based on data from br nearly 7 million men and women in Denmark.br The findings, which were published in the journal br 'Psychological Medicine,' were based on data from br nearly 7 million men and women in Denmark.br Currently, recreational marijuana has been br legalized in 22 states, with more states br expected to continue the legalization trend.br Currently, recreational marijuana has been br legalized in 22 states, with more states br expected to continue the legalization trend.br According to NIDA's most recent data, over one br in ten young adults between the ages of 19 and 30 br report using marijuana daily, a record high.