This study is ... not very useful. Dr Bredesen already has a treatment and in a small study with 10 patients showed that his treatment reversed Alzheimer in 9 patients. A wonderful achievement. Currently Dr Bredesen is doing a new study with 35 patients.

Dr Bredesen published an article about the first study: http://www.impactaging.com/papers/v6/n9/full/100690.html If you look at the treatment, one can understand the cause and why Alzheimer can be reversed.