Weed, dope & stoners.
1 Feb 2016
New research published today in the journal JAMA Internal Medicine confirms what many of us have suspected for some time: If you smoke a lot of weed — like a lot of it — it can potentially do permanent damage to your short-term memory.
Professor Reto Auer of the University of Lausanne led a team of researchers who examined data on the marijuana habits of nearly 3,400 Americans over a 25-year period. At the end of the study period, the subjects took a battery of tests designed to assess cognitive abilities — memory, focus, ability to make quick decisions, etc.
The study found that people who smoked marijuana on a daily basis for a long period of time — five years or more — had poorer verbal memory in middle age than people who didn't smoke, or who smoked less. This association remained even after researchers controlled for a variety of other factors known to affect cognitive performance, including age, education, use of other substances and depression.
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