The more I read about this, the more I can't believe it. Have a look at this:

http://www.ncbi.nlm.nih.gov/pubmed/12218255 --> succesfully tested on 5 Alheimer patients in 2002.

When tested on mice with Huntington disease scientist couldn't believe what they were seeing:
http://www.sciencedaily.com/releases...0213154100.htm

They think it even helps cognitive problems; which is not a surprise given that in 2002 it was already shown that it considerably helped Alzheimer patients.

"Dr. Sipione, for the first time, has demonstrated that, in a Huntington disease laboratory model, the treatment reverts the lab model back to normal, not just slightly better.