Lactose Intolerance Overview
Lactose is a type of sugar found primarily in milk and other dairy products such as cheese, cream and yogurt. Intolerance of lactose is the inability to break down of lactose in the body.
People with lactose intolerance experience digestive symptoms after eating any amount of dairy. These symptoms can lead to diarrhea, stomach pain, gas and bloating.
Causes of Lactose Intolerance
The body digests lactose using a substance called lactase. This breaks down lactose into two sugars called glucose and galactose, which can be easily absorbed into the bloodstream.
You become lactose intolerant when your small intestine stops making enough of the enzyme lactase to digest and break down the lactose. When this happens, the undigested lactose moves into the large intestine.
Patients who have lactose intolerance do not produce enough lactase, so lactose stays in the digestive system, where it’s fermented by bacteria.
This leads to the production of various gases, which cause the symptoms associated with lactose intolerance.
Depending on the underlying reason why the body’s not producing enough lactase, lactose intolerance may be temporary or permanent.
Signs and Symptoms of Lactose Intolerance
Symptoms of lactose intolerance usually develop within a few hours of consuming food or drink that contains lactose. Following are the common sigs and symptoms of lactose intolerance:
The severity of the symptoms depends on the amount of lactose consumed. Some people may still be able to drink a glass of milk without triggering any symptoms, while others may not even be able to have milk in their tea or coffee.
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