Cannabis Can Make You Remember Things That Never Happened

Washington State University researchers tested 120 regular cannabis users in a double-blind study.

Participants who vaporized THC performed worse than placebo on most memory tasks, including false memory and source memory tests.

The study found little difference between 20 mg and 40 mg doses, suggesting even moderate THC exposure can impair memory.

The findings raise concerns about cannabis’s impact on everyday functioning and situations that depend on accurate recall, such as eyewitness accounts.