Hey OM - This kinda plays into the above in a way along with a few other recent posts on here:
Researchers investigate stress as a potential cause of periodontal diseasemedicalxpress.com/news/2014-06-stress-potential-periodontal-disease.html
Main point being that under stress people have a tendency to eat like crap. Lot's of sugary foods.
This really caught my attention in relation to IBD:
"When the body is under stress, it produces more of the hormone cortisol, which usually acts as an anti-inflammatory agent. But when cortisol is produced peripherally in the gums, it seems to stimulate mast cells to produce more proteins, increasing inflammation and therefore increasing the progression of gum disease."
Not quite sure how the above fits with Prednisone though.