Sep 22, 2025 · Lactose intolerance is a condition that makes it hard to digest the sugar in milk and milk products, called lactose. People with lactose intolerance often have diarrhea, gas and bloating after …

Lactose intolerance occurs in people who lack the enzyme they need to break down lactose, the sugar in milk. It causes digestive distress when you eat dairy products.

The principal manifestation of lactose intolerance is an adverse reaction to products containing lactose (primarily milk), including abdominal bloating and cramps, flatulence, diarrhea, nausea, borborygmi, …

Feb 22, 2024 · Millions of Americans can’t digest a certain sugar in milk and milk products called lactose. If you’re one of them, you have lactose intolerance. The condition isn’t harmful, but it can be...

Lactose intolerance is an inability to digest lactose, a sugar found in milk and milk products. This condition often runs in families and can affect both children and adults. Lactose intolerance is most …

Aug 6, 2025 · Lactose intolerance is a clinical syndrome characterized by gastrointestinal symptoms, such as bloating, abdominal pain, flatulence, nausea, borborygmi, and diarrhea, following the …

Oct 21, 2025 · Learn about the symptoms, diagnosis, and treatment of an intolerance to the natural sugar in milk and how lactose intolerance differs from allergy.

3 days ago · Nutritionist Sonia Narang explains that sudden lactose intolerance can develop with age, infections, or poor lifestyle choices as lactase production in the gut declines. It is not an allergy and …

Lactose Intolerance - Learn about the causes, symptoms, diagnosis & treatment from the Merck Manuals - Medical Consumer Version.

Jun 24, 2017 · Some people are unable to digest it properly, leading to unpleasant digestive symptoms after dairy intake. This article reviews what lactose intolerance is, along with how it’s diagnosed and ...