Physical effects of marijuana (cannabis)

Marijuana (cannabis) produces a ‘high’ that generally makes the user feel more relaxed, happy and more talkative. It can also increase appetite.

When cannabis is used, THC is the main active chemical constituent absorbed into the bloodstream. THC crosses into the bloodstream and acts on the brain, flooding the receptors with the brain’s reward chemicals and producing the ‘high’ effect.

This page was reviewed in February 2014.