[101404]

> consume substances

I find this kind of euphemism use really weird. "Substances"? Water is a "substance". A carpet is too. Why not just say what one is actually referring to?

[dredmorbius]

You might care to insert "mind altering" before the phrase.

But as used, relatively common in standard English.

[minitoar]

I believe this usage is in reference to “controlled substances”, a legal term.

[wolco]

Beer, wine, rum and maybe some herbal drugs.