High
doses of Vitamin E slow down deterioration of moderate stages of
Alzheimer's disease by about six months when high doses were given daily
for two years. This translates to about two hours less help from
caretakers per day, which is not insignificant.
http://mobile.bloomberg.com/news/2013-12-31/vitamin-e-slows-decline-in-patients-with-mild-alzheimer-s.html
http://mobile.nytimes.com/blogs/newoldage/2013/12/31/alzheimers/?partner=rss&emc=rss