Lactose intoleranceDiagnosis

It's important to visit your GP if you think you or your child may have lactose intolerance, as the symptoms can be similar to other conditions.


Lactose intolerance is where you cannot properly digest lactose, a type of sugar found in milk and dairy products.


Symptoms of lactose intolerance may include farting, stomach cramps or diarrhoea a few hours after having food or drink containing lactose.


Lactose intolerance is caused by your body not producing enough lactase, a substance that helps you digest lactose.


You can control the symptoms of lactose intolerance by avoiding food and drink containing lactose.

Page last reviewed: 25/02/2019
Next review due: 25/02/2022