Functional dyspepsia (FD) is a common gastrointestinal disorder with an important impact on quality of life. There is a paucity of updated data on the prevalence of FD in rural areas of Bangladesh. The present study will be carried out to find the prevalence of FD in a community in rural Bangladesh. It also assesses potential risk factors. Eligible participants will first be evaluated for symptoms by a clinical interview using the standardized Rome IV functional dyspepsia questionnaire. Those who meet Rome IV criteria will then have an upper gastrointestinal endoscopy to exclude underlying organic diseases to establish a definitive diagnosis. Eventually patients with normal endoscopic findings will be diagnosed as having functional dyspepsia. This allows the accurate calculation of disease prevalence. Researchers will gather demographic information, lifestyle habits, and dietary patterns. The results will give important baseline data on rural FD burdens. Such data can inform community health care interventions.

Inclusion Criteria:

• Age 18 years or above
• Resident of the selected community

Exclusion Criteria:

• Known diagnosis of organic GI diseases.(e.g., Peptic ulcer disease, Inflammatory Bowel Disease, celiac disease, Malignancy, Intestinal Tuberculosis)
• Severe cognitive impairment, or critical illness
• Individuals with a history of major abdominal surgery
• Pregnant women

Place of study: Shimulia Union, Ashulia, Savar, Dhaka, Bangladesh. Study Population: All adults of two villages of Shimulia Union who will give their consent to participate in the study.

Because the study data includes sensitive personal health and clinical information for which participants did not grant broader sharing consent, individual-level data will not be publicly available. To safeguard participant privacy and confidentiality, access to individual data is strictly confined to the primary study investigators. Dissemination of findings through publications and presentations will rely solely on aggregate, unidentified data.