"2. Bacterial translocation as accessory to systemic pathophysiology
In some circumstances, outside stresses on the host (such as injury, infection, or unhealthy diet) can promote a dysregulation of intestinal mucosal homeostasis, resulting in a “leaky gut” syndrome and translocation of gut bacteria or bacterial products to systemic sites, which further aggravate the host's health."
Did you ever go through courses of Antibiotics and/or steroids for anything?
Google "Intestinal Microbiota" and you'll find a wealth of very recent articles all published within the last three years. According to the literature, you can load up with carbs, but in order to gain weight, the harmful bacteria will feed on the carbs first, and only when they're done, will you see any weight gain. So basically you have to eat 500 calories worth of carbs over and above the standard 2500 or so calories that you need in a day.
The bottom line is that there's no dietary solution to reversing the problem once it has started. Other measures are required such as the use of pre-biotics & probiotics known as "synbiotics"