The elephants in the room are being ignored. Much of this dementia is related to taking cholesterol lowering Statin drugs. These drugs cause cognitive memory loss in almost all cases, as admitted by the drug companies themselves. They do not mention, however the drastic increase in incidense of Trans Global Amnesia cases among people taking statins. In addition, these drugs cause many cases of severe muscle deterioration. Some of these effects are un reversible. I suggest any one interested, checkout the website of Duane Gravevine MD., a retired NASA flight surgeon astronaught who has done extensive research on this subject. His web address is spacedoc.net
The second elephant in the room is the fluoridation of our drinking water. This practice was started in Europe, long before it was used in the U.S . Now most european countries have banned its use. Fluoride increases the bodies absorption of aluminum! The amyloid plaques found in the brains of Altsheimer patients are laden with aluminum. Some solutions are simple, but they step on the toes of the vested interests!