10 Milky Mysteries Unveiled: The Sneaky Suspects Behind Lactose Intolerance

9. Acute Gastroenteritis (Post-Infectious Lactose Intolerance)

Office woman holding belly with menstrual pain, stomach cramping, hurt diarrhea abdominal problem. Photo Credit: Envato @coffeekai

A severe bout of acute gastroenteritis, often caused by viral (e.g., rotavirus) or bacterial infections, can surprisingly lead to temporary lactose intolerance. The inflammation and damage to the small intestine lining from the infection can temporarily reduce lactase enzyme production. This "post-infectious lactose intolerance" is usually transient, with lactase levels typically recovering as the intestinal lining heals over weeks or months. However, awareness is key, as reintroducing dairy too soon can prolong discomfort and recovery.

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