I was here to research about feeling week, tired, sick after bowel movement because I get that from time to time, more often lately than before. I don't know what it is, but I hope to figure it out. Regarding the possiblity of the Gall Bladder, I had Hepatitus A when I was 19 years old and it definitely has an impact on the Bile production/removal and the Gall Bladder, intestinal functions. I became Jaundiced from excess Bile in my system, fatty, greasy foods upset my stomach with an indigestion feeling and nausea because supposedly Bile is required to digest fats and the inflamed liver was somehow interfering with normal Gall Bladder function (according to the doctor). I now wonder if after 20 years later, there is a connection with my current symptoms and whatever longer effects of my liver damage and gall bladder condition after going through Hepatitus.
Regarding the lady on Atkins with Flatulence, I am no expert, but try researching about stomach flora balance and probiotics. There is a good symbiotic bacteria we need in our intestines to keep us healthy because they help prevent invasion of unfriendly bacteria. There is a supplement you can by over the counter as most health food stores and markets called Acidophilus or similar. Look into that and see if it will help you or not.