This is pure b/s imho.
Perhaps they should try looking into Lyme’s Disease and it’s correllations.
The cortisol liberates catalytic iron from the liver which is then metabolized in the most metabolically active locations: heart and brain. The excess iron in the hippo campus interferes with the insulin signaling and the uptake of glucose into the hippo campus for cognition and new memory creation.
My money is on a bacterial/viral cause.