 It's Your Body, brought to you by Lowe's. Here's Dr. Jennifer Ashton. Cancer screenings are very important in terms of early detection for cancer, but many Americans may be missing out. We'll talk more after this. Oh, no. Stomach issues again? Stomach issues? Who are you? Your pancreas. I could be the real reason for your diarrhea, gas, bloating, stomach pain, or loose oily stools.