oldies.comWhich came first, the lunatics or the grass? The time-honored notion of reefer madness, given new life recently in the British tabloid press, has taken another hit from reality. Widespread marijuana use by the public has not been followed by a proportional rise in diagnoses of schizophrenia or psychosis, according to the findings of a forthcoming study to be published in the scientific journal Schizophrenia Research.It stands to reason, after all: If marijuana really led to psychosis,