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Home > Digestive Disorders > Lactose Intolerance

Lactose Intolerance

Living with Lactose Intolerance

Overview

Lactose is the sugar in milk products. Individuals who are lactose intolerant lack the enzyme or chemical (lactase) to break down this sugar for absorption. As a result, lactose gets into the large bowel (colon) and may cause gas, bloating, diarrhea and abdominal cramping. Sometimes lactose intolerance occurs after digestive infections.

Lactose intolerance affects more than 7 million Canadians. This is likely an underestimate as many individuals do not associate their symptoms with lactose-containing foods or do not experience symptoms.

Find our more

Symptoms
What are symptoms of Lactose Intolerance? How do I know if I have it?
Tests & Diagnosis
How is Lactose Intolerance diagnosed? Should I see a doctor? What tests will my doctor perform?
Living with Lactose Intolerance
Do I need to take any special medications? Will I need an operation? What foods can I eat?

News & Research
Are there new treatments? What are the latest research findings? Who does this research?
FAQ
Read the answers our experts have provided to some of the most frequently asked questions we receive.