What should you know about wheat and lactose intolerance?

Lactose intolerance happens when the body does not break down lactose, the natural sugar in milk, effectively. It can lead to bloating, abdominal pain, gas or diarrhoea after dairy. Wheat can be relevant for other reasons, including an intolerance or an immune reaction; the pattern cannot be identified from symptoms alone. Abdominal symptoms may also have causes unrelated to either food.

Notice the food, portion, timing, symptoms and whether the food was eaten with anything else. A clinician may consider your history and, when appropriate, [Lactose Intolerance](/conditions/lactose-intolerance/) or [Food Intolerance Testing](/treatments/diagnostics-and-screening/food-intolerance-testing/).

Keep a food and symptom diary for several days. Do not remove wheat and all dairy at once, because that can make the trigger harder to identify and may narrow your diet unnecessarily. A clinician or [Nutrition Counselling](/treatments/lifestyle-and-wellness/nutrition-counselling/) service can help plan a safe, balanced trial if one is appropriate. Check ingredient labels and consider lactose-free alternatives only with advice if symptoms persist.

Arrange a medical assessment if symptoms keep returning, interfere with eating or daily life, or lead to unintended weight loss. Seek urgent care for severe or worsening abdominal pain, repeated vomiting, blood in the stool, faintness, or swelling and breathing difficulty after food. These warning signs need prompt evaluation rather than a self-directed elimination diet.

Ask whether your pattern fits lactose intolerance, whether wheat needs separate evaluation, and which foods should remain in your diet during testing. Bring your diary and ask how to replace nutrients if dairy or wheat is temporarily restricted.