↳Click here to read the full article. (http://www.nationmultimedia.com/national/Herbal-cures-for-dementia-possible-study-30192391.html)
Try chelation therapy and colloidal gold/ormus. You will not be disappointed. Unless you’re talking Red Reishi grown the proper substrate, any “herb” or its oils, by Chinese herbalisms standard is inferior in its capacity to treat/cure as wide the array disease; without as impressionable the potency. The only exception being Chaga, also a woody species mushroom. Neurological disease is most usually the build up of fat soluble heavy metals consequence glutathione and mineral depletion, a lifelong accumulation.
http://www.subtleenergies.com/ormus/ormus/ormus.htm
I have tried various vendors for my own personal amusement. Some perform better than others, for the price. Point being, check it out one way or another.
The subject of chelation therapy is really interesting I probably would not try this kind of therapy because I deplore needles.
Detox Foot bath are more in comfort level of acceptance.
Thanks for the info/links about mushrooms. 
Chelation is best done the oral route in my amateur (duragatory code word for self educated) perspective, using herbs and minerals in conjunction.