HealthDay | 'Medical Marijuana' Pill Falls Short in Dementia Study HealthDay In the United States, more than 5 million people have Alzheimer's disease, the most common form of dementia, according to the Alzheimer's Association. That number is expected to swell to more than 7 million in the next decade. Besides memory loss, most ... Cannabis-extract pills 'not effective' for dementia symptoms Medical Marijuana No Help for Dementia: Study Medical marijuana might not help ease symptoms of dementia |