This week, researchers published an article in the The Journal of the American Medical Association confirming once again that marijuana use negatively impacts memory.

Researchers found “current use of marijuana was associated with worse verbal memory and processing speed,” and that even among people who no longer use marijuana, “cumulative lifetime exposure to marijuana remained significantly associated with worse verbal memory.”

In other words, marijuana use impairs cognitive functions, and heavy marijuana use impairs short-term memory for years to come.

You can read more about the study and its findings here.