10 Milky Mysteries Unveiled: The Sneaky Suspects Behind Lactose Intolerance

7. Celiac Disease (Undiagnosed or Poorly Managed)

Celiac disease, an autoimmune condition where gluten consumption damages the small intestine lining, is another surprising link to lactose intolerance. The constant inflammation and damage to the intestinal villi (finger-like projections responsible for nutrient absorption and enzyme production) directly impair lactase production. For many undiagnosed celiac patients, lactose intolerance symptoms may be one of their first noticeable digestive issues. Adhering to a strict gluten-free diet is essential for healing the intestine, which can, in turn, restore lactase production and alleviate lactose intolerance in many cases.

8. Gastric Bypass Surgery and Other Abdominal Surgeries

Major abdominal surgeries, particularly gastric bypass procedures, can surprisingly trigger or worsen lactose intolerance. These surgeries alter the normal digestive pathway, sometimes bypassing sections of the small intestine where lactase is produced or where lactose is typically digested. This can lead to rapid transit of food to the colon, causing undigested lactose to ferment. Patients undergoing such procedures should be aware of this potential side effect and discuss dietary adjustments with their medical team to manage symptoms effectively post-surgery.