Frequent marijuana use associated with long-term memory loss

March 12, 2015 2:11 PM

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Frequent marijuana use associated with long-term memory loss

Previous research suggests smoking marijuana daily may affect short-term memory and that even casual use of marijuana can lead to brain changes. Now, another study shows that teenagers who smoke regularly but then kick the habit in a couple of years may see their long-term memory take a hit too.

The study, published Thursday in the journal Hippocampus, analyzed 97 study participants— some who had a history of smoking marijuana as teenagers and others who didn’t— and found that two years after abstaining, those who abused the substance scored worse on tests that assessed their long-term memo...

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