Linked yes, but so far not as a sole cause independently of other factors.<p>There is evidence that cannabis use can make existing conditions worsen, or trigger underlying condition. For example if you have predisposition to schizophrenia, cannabis use can make it break earlier. Cannabis, psychedelics or drugs and intoxicants in general, typically worsen then underlying mental condition (caused by genetic or environment).<p>This is why you should never recommend or push drugs or intoxicants to anyone. Try if you want, if you don't want, fine.