Or simply the immune system? Ran across this by accident at http://www.bio-medicine.org/medicine...drome-15963-1/

Go there for the full bit as I am going to eviscerate the paragraph to keep the Info Police calm

"... a new explanation for the epidemic of ...type 2 diabetes. Upon receipt of.... strong immune stimulants some individuals develop a hyperactive immune system ..... Other individuals produce increased cortisol, an immune suppressing hormone, to suppress the vaccine induced inflammation. The increased cortisol leads to type 2 diabetes and metabolic syndrome. "

Liu, Hong, and Carvey argue that prenatal exposure to bacterial toxins (much like a vaccination) leads to a hyperactive immune response by the microglia which ultimately destroys the SN via inflammation.

Dobbs et al have found elevated cortisol in PWP.

Blood sugar problems are well established in PWP.

Hangs together pretty well.