- since the majority of users are recreative users and not hardcore junkies, and even those are just people with various levels of mental issues, I would actually find this reliable.
- There are surveys that are taken, at least here in the EU, that track drug usage.
- Quality sampling of confiscated drugs
- Analysis of medical data (deaths, overdoses,...)
- Analysis of police data (crimes related to drug usage)
- Personal reports from drug users
- since the majority of users are recreative users and not hardcore junkies, and even those are just people with various levels of mental issues, I would actually find this reliable.
- There are surveys that are taken, at least here in the EU, that track drug usage.
- Quality sampling of confiscated drugs
- Analysis of medical data (deaths, overdoses,...)
- Analysis of police data (crimes related to drug usage)
A lot of data out there.