Do you, by any chance, suffer from bile acid malabsorption? The reason I ask is because I also suffer from weight loss. I've been suffering from BAM for about a year and a half now and I also have muscle wasting. I'm concerned that I may be anemic (loss of B12) or have iron-deficient anemia. I just obtained the book, "Could It Be B12?" by Sally M. Pacholok, R.N., B.S.N. and Jeffrey J. Stuart, D.O. and it's been very helpful. I've lost over 20 pounds since this all started and since I'm only 5'3" and now down to 105 lbs it's not good. All symptoms are pointing to that although I don't know the severity. I just recently fired my PCP because she seemed uninterested in helping me. I have a new PCP that I'm seeing this month. I am going in there with a whole list of tests to requests and am not taking no for an answer, nor am I taking any antibiotics that she may/may not offer me. I feel it best to start out at the basics, which is to find out what deficiencies I have that are causing me to not be able to move forward in this battle. After that I'll attack the rest such as Candida overgrowth which can be caused by deficiencies as well as the SIBO and SIFO and IBS-D (IBS-D being symptoms). Hoping this helps someone.