I have always suspected that Diabetes and Alzheimer's may be related, for most of my maternal family members have been diagnosed with either one of these diseases. A new study shows that Alzheimer's may be linked to insulin resistance which is also seen with type 2 Diabetes. When nasal insulin is administered to Alzheimer's patients, it helped improve their cognitive functions. See full article;

http://www.medscape.com/viewarticle/740517?sssdmh=dm1.678814&src=nldne