I am a retired neuropsychiatrist, retired after a 40 year career as a clinician and teacher.  I treated 25,000 patients and wrote 1,000,000 psychotropic Rx.  I am very suspicious of the medical industry being built around the misdiagnosis of AD.  In fact, Dr. Alzheimer described a triad of post-mortem histopathological findings in sections from the brains of deceased patients who suffered from dementias prior to their deaths.  Technically, this was never a "disease" per se.  In my practice, I treated hundreds of patients suffering from early short-term memory loss and their memory function was totally restored.  What I and my patients discovered was a set of transcription factor deficiencies including one or more of the following: Vit. B12, thyroid hormones, estrogen or testosterone, and cortisol (either too much or too little).  Most often, they could solve their memory problems with a visit to the nearest health food store for some B vits, Kelp, DHEA, or pregnenalone.  Sadly, this simple, cheap, safe, and effective treatment strategy has never been published, as far as I know.  Educate yourself with the net, which is what I always recommended to my patients.