http://www.the-scientist.com/?articl...and-the-Brain/
...INSULIN’S ROLE IN BODY AND BRAIN: Insulin, long recognized as a primary regulator of blood glucose, is now also understood to play key roles in neuroplasticity, neuromodulation, and neurotrophism, the process of neuronal growth, stimulated by neuronal differentiation and survival. ...
...Metabolic disturbances have also been implicated in neurodegenerative disorders, including Alzheimer’s, Huntington’s, and Parkinson’s diseases. Multiple clinical observations have demonstrated that dementia in general, and Alzheimer’s disease in particular, are associated with type 2 diabetes and obesity. Moreover, type 2 diabetes is considered an independent risk factor for dementia, with the prevalence of dementia in diabetic populations double that of healthy patient populations. Other clinical observations have shown that prevalence rates for type 2 diabetes and insulin abnormalities are approximately 7-fold higher in patients with Huntington’s disease when compared to healthy controls, and impaired glucose tolerance affects up to 80 percent of Parkinson’s patients.
Insulin's Role in Body and Brain
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