I'm willing to consider that Alzheimer's Disease may be affected by diet, but this article seems awfully slim on real data and in one instance seems to diverge

I'm willing to consider that Alzheimer's Disease may be affected by diet, but this article seems awfully slim on real data and in one instance seems to diverge from actual experimental results. They claim that Type-2 diabetes and AD are "exacerbated by high fat diets", but the link with regards to the diabetes study specifies diet-induced obesity, not "high fat" diet. Dietary fat has much less effect on blood glucose levels than carbohydrates, so insulin's role is markedly decreased.