This study aims to determine normal 24-hour pH-impedance monitoring values, including acid exposure time (AET), in healthy Indian adults. It will help improve GERD diagnosis in India by providing population-specific data. The study will also explore how diet, body position, and nighttime reflux affect acid exposure. Healthy volunteers aged 18 and above will be monitored for 24 hours.
Adult 18-50 years of age
No gastro-intestinal symptoms
No past GI or thoracic or spine surgery
Not on any medications
Any diagnosed systemic or organ specific disease (liver/kidney/heart/neurological disease, DM/HTN/Thyroid disease/ connective tissue disorder/inflammatory bowel disease/ irritable bowel syndrome)
GERD symptoms/ functional dyspepsia
Pregnant women or breast-feeding women
Helicobacter pylori infection