What is causing my daily diarrhea for a year?

Should see doc asap: It is possible that you have diarrhea-predominant ibs (irritable bowel syndrome), but have some other common symptoms to ibs include bloating, gasiness, frequent/urge to have bm, early satiety, dyspepsia symptoms etc... Without further detail, i can't be for sure. Nevertheless, being 47 and your symptoms = 1yr, i strongly recommend seeing doc at your earliest convenience.. Good luck.