Anyone with IBS knows that it is not very well understood by conventional medicine and there is not a very good cure for it. But most patients (and doctors) have never heard of an underlying cause to IBS, which is Small Intestinal Bacterial Overgrowth (also referred to as SIBO). As the name implies, this is an overgrowth of bacteria in our small intestine and it can cause as complex an issue as IBS.
This is different than an acute infection of bacteria such as food poisoning. This is a condition in which commensal bacteria, or bacteria that normally live in our bodies, are able to establish itself in the small intestine where they do not belong.
Our systems have specific muscular mechanisms in place that sweep the bacteria thru our small intestine into our large intestine. Conditions such as diabetes, hypothyroidism, antibiotic treatments, food poisoning, poor immune defenses, and poor bowel flora counts can interfere with this muscle activity and result in SIBO.