Type 3 Diabetes from Brain Insulin Resistance?
According to this MSNBC article, lower brain insulin levels lead to a longer life.
High blood sugar levels lead to faster aging, but the insulin “cure” for high blood glucose is probably just as bad as the problem, as higher insulin levels have been shown to increase cancer. Now, researchers are targeting insulin resistance in the brain as a precursor to Alzheimer’s Disease. Some are even calling Alzheimer’s “type III diabetes”.
In this study, they allowed some mice to get really fat and display signs of diabetes. But they eliminated the ability of the mice to process insulin in their brains.  By doing that, they increased the lifespans of even the fat, diabetic mice by 18%.
The key, said the researchers, is to keep both blood glucose and insulin levels down. The only consistently known way to do that is with regular cardio/aerobic exercise. Â