The hydrogen breath test is a diagnostic test used to assess various conditions related to the digestion of certain carbohydrates in the gastrointestinal tract. It is a non-invasive procedure that helps healthcare providers identify conditions such as lactose intolerance, fructose malabsorption, and bacterial overgrowth in the small intestine. The hydrogen breath test is commonly used to diagnose the following conditions: • Lactose Intolerance: A condition in which the body is unable to properly digest lactose, a sugar found in dairy products. • Fructose Malabsorption: A condition in which the body has difficulty absorbing fructose, a sugar found in many fruits and sweeteners. • Small Intestinal Bacterial Overgrowth (SIBO): An overgrowth of bacteria in the small intestine, which can lead to fermentation of carbohydrates and increased hydrogen production. The test is considered safe and relatively non-invasive. It provides valuable information about an individual's ability to digest certain carbohydrates and can help guide dietary recommendations and treatment plans. The interpretation of the test results should be done by a qualified healthcare provider, often a gastroenterologist or a medical professional specializing in gastrointestinal disorders.