Pilot study of long-term care residents tests therapeutic effects of cannabidiol on seniors.

Mike Walker can no longer have a simple conversation with his wife. It was just four years ago, at the young age of 52, when Karen was originally diagnosed with dementia.

She no longer speaks, and also suffers from agitation and physical outbursts with aggression, which can be common with the disease.

"You just can't give up on somebody, you gotta try whatever means that are out there," Mike says.

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Jennifer Barr ~ CBC News ~