Re: GAS model outdated and inaccurate...

"They can get damaged from a tumor or certain infections, but otherwise they will never bonk."

This is a contradictory statement. Basically they can "bonk" if the right condition (in your opinion) is met (infection, tumor). But stress on the other hand, according to you, they can't "bonk". 

"There are three major types of adrenal insufficiency.

Primary adrenal insufficiency is due to impairment of the adrenal glands.

80% are due to an autoimmune disease called Addison's disease or autoimmune adrenalitis.

One subtype is called idiopathic, or of unknown cause.

Other cases are due to congenital adrenal hyperplasia or an adenoma (tumor) of the adrenal gland."

http://en.wikipedia.org/wiki/Adrenal_insufficiency#Types 

"Idiopathic is an adjective used primarily in medicine meaning "a disease or condition the cause of which is not known or that arises spontaneously"."

http://en.wikipedia.org/wiki/Idiopathic