Is carb intolerance linked to SIBO?

Carb intolerance is indeed linked to Small Intestinal Bacterial Overgrowth (SIBO). Dr. Stephen Cabral explains that SIBO and yeast overgrowth often lead to gut fermentation when carbohydrates are consumed, causing symptoms like inflammation and intestinal permeability. Additionally, a high-fat, high-protein diet might temporarily reduce symptoms by shrinking the microbiome, but this isn't a long-term solution as it can lead to other issues, including worsened SIBO 1.

Dr. Mark Hyman adds that SIBO results from an overgrowth of bacteria in the small intestine, which ferment consumed carbohydrates and produce gas, causing symptoms like bloating, abdominal pain, and changes in bowel function. This fermentation process directly contributes to carb intolerance 2.