We’re not denying that weed has some advantages, but the fact remains that it is still bad for your memory! A study published in the journal JAMA Internal Medicinefound that smoking a lot of weed can do permanent damage to your short-term memory.
A team of researchers led by Professor Reto Auer of the University of Lausanne examined the marijuana-smoking habits of over 3,400 people, across a span of 25 years. At the end of the 25-year period, they had the participants do a series of tests to evaluate their memory, ability to focus, decision making capability and other cognitive abilities.
They found that people who smoked marijuana every day for a long period of time, basically five years or longer, had poorer verbal memory than those who didn’t smoke or smoked less frequently.
Auer and his team coined the phrase ‘marijuana years’ to measure exposure to marijuana. 365 days of smoking pot, whether consecutive or spread out, adds up to one marijuana year of use. So, if a person has been smoking pot every day for a year, or every alternate day for two years, it is still one marijuana year of use.