WASHINGTON – Marijuana is getting a little more potent each year, the government said Wednesday.
A project at the University of Mississippi has tested samples of marijuana seized by law enforcement agents annually since the late 1970s to check levels of THC, the active ingredient.
The average amount of THC in marijuana seized last year reached 8.5 percent, continuing an almost yearly uptick, the White House drug-control policy office said Wednesday. The THC level has doubled since the 1980s.
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