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.

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 intolerant to varying degrees, …

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...

Sep 28, 2025 · Lactose intolerance is a condition that results in uncomfortable digestive symptoms after you consume foods or drinks that contain lactose—or a sugar that is naturally found in dairy products.

Learn about lactose intolerance, a condition in which you have symptoms—such as bloating, diarrhea, and gas—after you consume foods or drinks that have lactose.

Find out about lactose intolerance, what the symptoms are, what the treatments are, what tests can find out if you have it, and what causes it.

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.

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

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 …