Yes, chronic stress affects the intestinal lining. The intestine is the organ that demands more blood irrigation in the body when is resting since the intestinal cells replace fastest than any other organ.
Chronic stress causes a chronic fight or fly mode deviating the blood flow to the muscles and organs that are involved in the stress response. As a result, the intestinal lining doesn't get enough blood irrigation and the required nutrients to replace the cells. Overtime, the lining becomes defective causing LGS.
This is the link between stress and LGS. In a few words, chronic stress steals the needed blood flow to keep the lining healthy.
As you know, I was lucky enough to share and debate topics linked to candidiasis and LGS with Dr. Stoll since I was an active member of his bulletin board during 2009 and 2010.