The tobacco lobby was quite successful debunking that myth. Cannabis had no lobby yet. The association is likely tied to self medication. Tobacco contains a lo

The tobacco lobby was quite successful debunking that myth. Cannabis had no lobby yet. The association is likely tied to self medication. Tobacco contains a low level monoamine inhibitor, these have some uses in psychiatry. (it is the main bit that is addictive - not really nicotine alone - harman and norharman, related to harmaline)