Relief for the millions of seniors who suffer from Alzheimer’s disease may come in form of a joint.

A new study finds marijuana is effective in the treatment and prevention of Alzheimer’s disease and other forms of dementia. The research, published in the Journal of Alzheimer’s Disease, says the “THC, the main active ingredient in marijuana, could be a potential therapeutic treatment option for Alzheimer’s disease through multiple functions and pathways.”

More than 5 million Americans have Alzheimer’s. One in 3 seniors will die from the disease or some other dementia.

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