Small Intestine Bacterial Overgrowth (SIBO)
Small Intestine Bacterial Overgrowth (SIBO) is an overgrowth of bacteria in the upper gastrointestinal tract. Bacteria eat sugar and create a gas byproduct which can be measured with a breath test.
This gas increases pressure in the digestive tract. Belching and flatulence allows the gas to escape, but it often moves bacteria from one section of the digestive tract, to a neighboring section where it is not meant to reside.
A normal amount of bacteria in the digestive tract show cause no to mild symptoms. Eating a balanced diet without excess sugar, paired with daily bowel movements, minimizes your chances of having too much bacteria in your digestive tract. But when you overeat simple sugars and/or do not have daily bowel movements, bacteria are overfed leading to increased gas production.
The increase in gas in the digestive tract blocks movement, impairing function. When this impaired functioning occurs long enough, or paired with an underlying weakness, such as hypothyroidism, the gut movement becomes sluggish, overfeeding bacteria, re-creating the SIBO.