I frequently hear teenagers and young adults say things like 'Cannabis is harmless', 'not as bad as alcohol', etc. The issue here is the initial research consi

I frequently hear teenagers and young adults say things like 'Cannabis is harmless', 'not as bad as alcohol', etc. The issue here is the initial research consistently shows us the opposite - frequent cannabis use appears to cause developmental delay and may cause _irreversible_ mental illness in adolescents that is in at least one case worse than alcohol. Let's take Schizophrenia as an example: Increased Risk of Schizophrenia from Alcohol and drugs: Cannabis: 5.2 times Alcohol: 3.4 times Hallucinogenic drugs: 1.9 times Sedatives: 1.7 times Amphetamines: 1.24 times Other substances: 2.8 times source: http://schizophrenia.com/?p=793 http://schizophrenia.com/?p=793 Direct link to study - https://www.cambridge.org/core/journals/psychological-medicine/article/association-between-alcohol-cannabis-and-other-illicit-substance-abuse-and-risk-of-developing-schizophrenia-a-nationwide-population-based-register-study/8914A1F1A0CBFBF17982720CBE2C2451 https://www.cambridge.org/core/journals/psychological-medici... Since the brain doesn't fully develop until 25 I don't disagree that alcohol and other legal substances are dangerous for adolescents but from the initial research we are seeing Cannabis is in some cases more damaging than alcohol and requires further study.