From recent papers, I understood that insulin resistance starts developing long before you are diagnosed with diabetes. That may perhaps be as much 10 years or more. Also the process of demyelination and nerve damage has started earlier, but the signs, in our case MS, will only show up much later.
We are breaking new grounds here. The key metrics to qualify and quantify will need to be determined. I think the posting by Lyndacarol is extremely important here as we may need to look for early indicators.
... If your GP or endocrinologist has tested your glucose level and it is "normal," ask that your fasting serum insulin level be tested. (I suspect the insulin level will be above 7 UU/ML.)
the link between nerve damage and diabetics has been known for a long time: http://diabetes.niddk.nih.gov/dm/pubs/neuropathies/
insulin resistance is also thought to be the cause of other neurodegenerative diseases as ALS http://www.als.net/forum/default.aspx?g=posts&m=326324
http://care.diabetesjournals.org/conten ... 984.1.full