A pilot study involving 21 institutionalized individuals with moderate-to-severe Alzheimer’s found that, although drinking two 4-oz glasses of apple juice daily for a month produced no change in the Dementia Rating Scale or in the Activities of Daily Living measure, there was a significant (27%) improvement in behavioral and psychotic symptoms. The largest changes occurred in anxiety, agitation, and delusion.
(2010). Apple Juice Improved Behavioral But Not Cognitive Symptoms in Moderate-to-Late Stage Alzheimer’s Disease in an Open-Label Pilot Study.
American Journal of Alzheimer's Disease and Other Dementias. 367 - 371.
Full text is available free for a limited time at http://aja.sagepub.com/cgi/reprint/25/4/367.