How Resistant Starch Will Help to Make You Healthier and Thinner:
Sorry, butyrate for the colon has to come from fiber-degrading bacteria.
Lots of studies show that dietary butyrate doesn’t make it to the large intestine, it’s all absorbed as fat in the small intestine. The only thing that comes close is butyrate enemas or specially coated pills, but I doubt you can find these at Wal-Mart.
Follow Chris’s advice for removing SIBO, and keep trying! All fiber is a FODMAP. People get too wrapped around the term and think they need to avoid them all. If you are forming turds, you are ingesting a FODMAP of some type. You maybe need to avoid allergens more than FODMAPS (dairy, wheat, eggs, nuts, shellfish, etc…). Find a way to eat that keeps you regular and feeling good! Avoiding foods until the list is four feet long is not the right approach. Elimination diets are great to figure yourself out.