Schizophrenia is only a risk if you start smoking dope at an early age, before your brain is fully developed, and this is true not only for marijuana but also f

Schizophrenia is only a risk if you start smoking dope at an early age, before your brain is fully developed, and this is true not only for marijuana but also for pretty much all psychoactive drugs (Ritaline, anyone?). Consuming psychoactive substances at an early age is never a good idea. For the record, schizophrenia has never been associated to people who started smoking marijuana /after/ adolescence, and it has even show therapeutic properties for a number of brain disorders, such as Alzheimer's. I should add that unfortunately many youngsters and adolescents smoke pot and that should absolutely not happen, the same way alcohol and cigarettes are prohibited for people under 18/21.