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Prevalence of overlaps between GERD, FD and IBS and impact on health‐related quality of life

Objective:  Gastroesophageal reflux disease (GERD), functional dyspepsia (FD), and irritable bowel syndrome (IBS) are common, and have negative impacts on health‐related quality of life (HR‐QOL). Several studies demonstrated a significant overlap between two of these three diseases. The purpose of this study was to examine the prevalence of GERD, FD, and IBS, their overlap rates, and HR‐QOL for each disease and each overlap compared with healthy controls in the Japanese general population.