Researchers have developed a wearable sensor that attaches to underwear to monitor flatulence patterns and detect lactose intolerance. The device tracks the frequency of gas release throughout the day, providing data that reveals how often people actually pass gas compared to their estimates.

The technology works by detecting pressure changes and vibrations associated with intestinal gas. This information helps identify lactose intolerance, a condition affecting roughly 65 percent of the global population. People with lactose intolerance struggle to digest milk sugar, which causes bloating, cramping, and increased gas production.

Traditional diagnostic methods require patients to visit clinics and undergo breath tests. This wearable approach allows continuous monitoring in real-world settings, capturing natural patterns without clinical constraints.

The device proved accurate in preliminary testing. Participants wearing the sensor generated reliable data that doctors could interpret to diagnose intolerance. The technology also revealed that people underestimate their actual flatulence frequency, often significantly.

Researchers plan to expand the device's applications beyond lactose intolerance. Future versions could monitor other digestive disorders, including irritable bowel syndrome and celiac disease. The approach represents a shift toward noninvasive, continuous health monitoring that patients can use at home, potentially improving diagnosis rates for conditions people find embarrassing to discuss with doctors.