"[E]xpert opinion suggests that direct harm to
cannabis users is relatively modest compared to
other illegal drugs – and legal ones, particularly alcohol and tobacco. "
...
"[R]egular cannabis users in the US seem to have
significantly easier access to hard drugs than non-users of cannabis."
<http://www.voxeu.org/index.php?q=node/5757>http://www.voxeu.org/index.php?q=node/5757
www.peoplewho.org