Lactose intolerance - Diagnosis & treatment - Mayo Clinic
Sep 22, 2025 · A healthcare professional might suspect lactose intolerance based on someone's symptoms and response to reducing the amount of dairy foods in the diet. A diagnosis can be …
Lactose intolerance - Symptoms & causes - Mayo Clinic
Sep 22, 2025 · Someone can have low levels of lactase and still be able to digest milk products. But if levels are too low, a person can become lactose intolerant. Most people with lactose intolerance can …
Mayo Clinic Q and A: Lactose Intolerance Can Develop at Any Age
Jun 14, 2016 · If test results do not point to lactose intolerance, your doctor may recommend additional tests to check for another condition that could be causing your symptoms, such as a milk allergy, …
Small intestinal bacterial overgrowth (SIBO) - Mayo Clinic
Nov 11, 2024 · Damage to the small intestine may cause you to lose the ability to digest milk sugar (lactose). In that case, it's important to avoid most lactose-containing products, or use lactase …
Mayo Clinic Q and A: Testing for food allergies and sensitivities
Apr 13, 2022 · People who are sensitive to lactose do not have enough enzymes to break down the lactose in food and beverages, which will cause symptoms. Use a food diary to track what food you …
Glucose tolerance test - Mayo Clinic
May 3, 2024 · It's a two-hour test that involves fasting before you drink a glucose solution that has 75 grams of sugar. Whether you take the one- or two-step glucose tolerance test, the timing of when …
Lactulose (oral route) - Side effects & dosage - Mayo Clinic
Feb 1, 2026 · Low lactose or galactose diet—Should not be used in patients who follow this diet. Medical tests or surgery on your colon or rectum (eg, colonoscopy, proctoscopy)—Patients undergoing these …
Mayo Clinic Q and A: All about food allergies and intolerances
Oct 31, 2022 · During this test, conducted in your allergist's office, you are given small, but increasing amounts of the suspect food. Your health care professional watches you to see whether a reaction …
Diarrhea - Diagnosis and treatment - Mayo Clinic
Jan 18, 2025 · This type of test can help determine if you have a lactose intolerance. After you drink a liquid that contains high levels of lactose, your breath is measured for hydrogen at regular intervals.
Intolerancia a la lactosa - Diagnóstico y tratamiento - Mayo Clinic
Mar 5, 2022 · Lactose intolerance. National Institute of Diabetes and Digestive and Kidney Diseases. https://www.niddk.nih.gov/health-information/digestive-diseases/lactose-intolerance/all-content.