What are your thoughts on research that suggests alzheimer's disease may be strongly linked to diabetes?

Diabetic dementia: Patients with diabetes are much more likely than those without to become demented earlier, and it is difficult to determine the cause without an autopsy. Most pathologists believe that most of the dementia in diabetics is from the several ways in which the disease damages blood vessels & maybe brain cells, rather than true alzheimer's as defined in terms of its specific brain changes.

Don't believe it: Diabetes may be one of the risk factors but more because of the danger of brain vascular damage than metabolic factors.

Good evidence: Diabetes increases the risk of alzheimer's disease. Also there are factors related to Insulin that may be a key factor in alzheimer's . We await more research into the relationship.

Research model: After inhalation of Insulin seemed to produce temporary improvement in cognition, there was some thought that alzheimer's disease represented diabetes of brain, and studies of Insulin receptor function started, but so far have lead no where. Contrast, also improvement when tumor necrosis factor Alpha antagonist injected into spinal canal. Too sporadic and not leading to new meds.