Study shows U.S states where cannabis is legal for recreational purposes have experienced a decrease in patients registering for medical cannabis programmes.
The study on different US states, published in the International Drug Journal, revealed that numbers of registered and active medical cannabis consumers increased while it was not legal for recreational use.
Researchers in Arizona took data from the medical cannabis registry from two dozen states between 2013 and 2020. These are mandatory registries that record the number of medical cannabis patients. They analysed the data to see if there were any changes around the times that recreational legalisation was introduced.
There are currently 19 states in the US that have legalised recreational cannabis including New Jersey, Vermont, Arizona and New York. However, more states have medical cannabis programs although some are still not operational. Some states such as Colorado have had recreational access since 2012, the year before the study was started.
Medical cannabis patients
The results confirmed that medical cannabis cardholders increased during times when recreational use was not legal. It then subsequently decreased when it became legal.
It also revealed an increase of 380 patients per 100,000 people per year when just medical cannabis was legal. This corresponded to a decrease of 100 patients per 100,000 after recreational cannabis was allowed. The researchers noted that active registered active male patients decreased faster than women. In states where only medical cannabis was legal, the older age groups (35 or older), increased faster.
They also found that in three states with medical-only use, the results showed significant increases in enrollment from 2016 to 2020 across white, African-American and Hispanic patients.
The researchers wrote: “There is speculation that enrollment in U.S. state medical cannabis programs differs depending on whether adult recreational cannabis use is legal. If true, this could have implications for public health and policy.”
“Findings suggest that recreational cannabis legalisation is associated with decreasing enrollment in medical cannabis programs, particularly for males.”
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