Dementia is a syndrome, not a disease. Dementia is a group of symptoms that affects mental cognitive tasks such as memory and reasoning. Dementia is an umbrella term that Alzheimer's disease can fall under. It can occur due to a variety of conditions, the most common of which is Alzheimer's disease
https://player.whooshkaa.com/shows/dementiaq
episode 42: Coffee and Cannabis Helps Alzheimers
Coffee and cannabis are both rich sources of antioxidants it’s worth diving in and researching as much information on it as you can, especially when discussing it with the medical professionals involved in your case.