It&#x27;s really important to not forget the genetic factors at play in Alzheimer&#x27;s. Between 65-80% of all Alzheimer&#x27;s patients have at least one genetic version of the ApoE4 allele, a genotype found in around 25% of the population [1]. ApoE is made in astrocytes and is involved in cholesterol transport to neurons and in repairing damage done to neurons that occurs with normal aging. That isn&#x27;t to say there isn&#x27;t a dietary link or that critical lifestyle factors don&#x27;t interact with these genetics, however! Insulin resistance leads to inflammation (which has been shown to accelerate brain aging) and may be one way in which type 2 diabetes is linked with Alzheimer&#x27;s. I think calling Alzheimer&#x27;s disease &quot;type 3 diabetes&quot; may be a somewhat dramatic oversimplification and a bit misleading, though, since the mechanism would be a bit more general (in this case).<p>[1]: <a href="http:&#x2F;&#x2F;www.ncbi.nlm.nih.gov&#x2F;pubmed&#x2F;21787325" rel="nofollow">http:&#x2F;&#x2F;www.ncbi.nlm.nih.gov&#x2F;pubmed&#x2F;21787325</a>