Thanks again Mendomaid. I think I have to take a long, hard look at whether I have Celiac Sprue or non-Celiac Sprue. I wish the problem were more easily diagnosable. Why does it have to be such an ordeal to find out what exactly is going on with our bodies?
If I have some type of gut-issue, it would be nice to know whether it is something I've had my entire life. Throughout my life, I've never had any obvious/unusual gastrointestinal symptoms that would suggest Celiac/gluten-intolerance - but I have had other health problems that have progressed over the years and could ultimately tie back to the gut. Was the possible gut problem present for (nearly) all of my life and it is just now starting to reach the point where I'm beginning to notice - or was it triggered more recently by something (i.e. medications, or possibly a thyroid problem, or other possible environmental triggers).
Thanks for the link to celiac.com - I will try to continue looking over the information there to see if this condition could possibly be affecting me.