Our office currently offers breath tests to check for intolerances to lactose and fructose as well as evaluate for bacterial overgrowth. Now our office is pleased to start offering a breath test for fructan intolerance as well.


Fructans escape digestion in the upper gastrointestinal tract and reach the large intestine virtually intact. In the large intestine fructans are fermented and act as prebiotics. PREbiotics are different from PRObiotics. Probiotics are good bacteria that help keep your digestive system healthy by controlling the growth of harmful bacteria. Prebiotics are carbohydrates that cannot be digested by the human body.  They act like food for probiotics.


For some individuals fructans may contribute to gastrointestinal symptoms such as bloating, gas, or abnormal bowel habits. It is good to know if you are fructan intolerant as simple dietary modifications may improve your symptoms.  A few example of high fructan containing foods are wheat, onions, garlic, broccoli, and artichoke. If you test positive for fructan intolerance we will provide dietary recommendations.