When SIBO & IBS-Constipation are just unrecognized thiamine deficiency

In many people chronic upper constipation and GERD are misdiagnosed as bacterial overgrowth. Unfortunately, they are often non-responsive to antimicrobial treatments. Yet, sometimes the issues improve greatly with vitamin B1 repletion. In this case, the "SIBO" diagnosis is simply a symptom of an underlying systemic problem with energy metabolism.