A number of studies ive read seem to point towards marijuana and hallucinogens as merely aggravating symptoms of mental disorders that were already present, but

A number of studies ive read seem to point towards marijuana and hallucinogens as merely aggravating symptoms of mental disorders that were already present, but hadn't yet easily or fully expressed themselves. Things like bi-polar, schizophrenia, and other disorders are commonly known to grow in intensity going into adulthood, so even if the first time a breakdown or episode happens is actually triggered by something like marijuana, does that mean they could have never been diagnosed if they never used that drug? Or does it just mean they would have had a breakdown in the near future regardless? Maybe they just set the trigger of slightly earlier.