India, April 22 -- While cannabis enthusiasts marked 420 Day with celebrations, a new study in JAMA Neurology has cast a shadow over the festivities, revealing a potential link between regular cannabis use and a heightened risk of dementia.

The study analyzed health records of more than six million Canadians between 2008 and 2021. Participants were aged 45 to 105 and did not have dementia at the start of the study.

Researchers found that individuals who had visited an emergency room or were hospitalized for cannabis-related issues faced a notable increase in dementia diagnoses over time. Within five years of such a visit, 5 percent were diagnosed with dementia, which later surged to 19 percent within ten years.

"Someone who has an emerge...