McMaster University

Demystifying Medicine
Seminar Series

THC Stays in Your System for 30 Days!

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This video demystifies the myth that tetrahydrocannabinol (THC) — the principal psychoactive constituent of cannabis (marijuana) — stays in your system for 30 days. The video provides research-based information regarding how the drug affects the human body. Marijuana is quickly becoming a hot topic within political and societal discussions. In Canada, 33% of 18- to 24-year-olds reported using marijuana in the past year.

— Video by Helen Kim, Jessica Kun, Lyndsay Rayner, Nicole Vandenheuvel and Fadi Hana