No one here mentioning aluminium intake, due to aluminium cookware? This is a well known factor.
And don't give me that 'disproven' line. It was solidly established, but there are groups that run counter disinformation due to their own involvement and interests. Same as mercury in dental amalgam and inoculations (as thimerosal), carcinogens in cigarettes, etc.
Did you google alzheimers cures? No, it's NOT wise to just assume mainstream medicine will respond to real findings, and provide the best care. They're beholden to the pharmaceuticals industry, which is not only not interested in unpatentable cures, but actively suppresses them. And that's not even touching the whole 'Elites, global cull, deliberate murderous intent' thing.
I've attached a zip file with some articles on Alzheimers, and vitamin B12 & coconut oil - claimed to greatly help. 1.2M zip. Assorted file formats, you'll manage. .MHT is the Opera web page as single file format.
Sorry to hear about your friend. A close technical-minded friend of mine is currently going through the horrible liver cancer, may die, nightmare.