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 …

Lactose intolerance primarily refers to a syndrome with one or more symptoms upon the consumption of food substances containing lactose sugar. Individuals may be lactose …

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.

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 …

Lactose intolerance is caused by lactose malabsorption. If you have lactose malabsorption, your small intestine makes low levels of lactase—the enzyme that breaks down lactose—and can’t …

Jul 1, 2025 · What is lactose intolerance? Lactose intolerance is your body’s inability to digest foods with lactose in them. Lactose is the sugar found in milk and foods made with milk (ice …

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.

Nov 20, 2025 · Lactose intolerance refers to a reduced ability to digest lactose, or milk sugar. Around 75% of the world's population is lactose intolerant to some degree, due to not …

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 …

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