Lactose intolerance is usually diagnosed based on symptoms, but a healthcare provider can also perform breath and blood testing. Breath tests are also available as over-the-counter home test kits.

DEAR DR. ROACH: I am lactose intolerant and have recently learned that lactose is used in many prescriptions, but there is no warning on the information sheet. I only became aware of this after ...

Lactose intolerance occurs when your body is unable to digest the sugar lactose, which is found in milk and milk products. This causes uncomfortable symptoms including gas, bloating, cramps and even ...

Lactose intolerance, often seen as a simple enzyme deficiency, may have a new explanation. Scientists are exploring how the ...

DEAR DR. GOTT: My husband claims to be lactose-intolerant, yet he happily (and without incident) consumes creamed soups, iced cream, cheese and other dairy products. He also says he is allergic to ...

Lactose intolerance is the most common food sensitivity worldwide. Lactose intolerance and dairy allergy are not the same, but the differences can be misunderstood. How do you know if you are ...

Hydrogen and methane breath tests (HMBT) are a noninvasive diagnostic tool commonly employed to evaluate small intestinal bacterial overgrowth (SIBO) and issues with carbohydrate malabsorption, such ...