Hi. Thanks for your query. Noted the history and understood your concerns. 3-4 loose stools per day for the last one year can be due to the following reasons: Sub-clinical intestinal infection. IBS that is irritable bowel syndrome. INtolerance to certain foods and beverages. Stress and anxiety. This can be diagnosed by the following: Get the stool tests done for three consecutive days. Tests of blood, particularly for thyroid and liver functions. Ultrasonography of the whole abdomen, CT scan if required for further evaluation. Colonoscopy and biopsy. All these investigations along with a proper clinical evaluation by a Doctor can help you to get a diagnosis and a proper plan of management.