THC vs. Dementia: Cannabis Linked to Lower Risk of Cognitive Decline

A study by Upstate Medical University suggests recreational cannabis might reduce the risk of cognitive decline, challenging earlier research and highlighting the need for longitudinal analysis.

A new study by Upstate Medical University researchers shows that recreational cannabis use may offer protection against cognitive decline.

The study, done by Master of Public Health (MPH) student Zhi Chen and Professor Roger Wong, Ph.D., MPH, MSW, analyzed a large data set from the CDC and found that compared to non-users, non-medical cannabis use, such as for recreational purposes, was significantly associated with 96 percent decreased odds of subjective cognitive decline (SCD). Medical and dual (medical and non-medical) use were also associated with decreased odds of SCD, although not significant. Cannabis consumption frequency and method were also not significantly associated with SCD.