What is IBS?What are the main signs and symptoms of IBS?How is IBS diagnosed?What are some of the main medical treatments for IBS?Have any supplements been studied for IBS?How could diet affect IBS?Are there any other treatments for IBS?What causes IBS?Should certain foods be avoided for IBS?Can a high-fiber diet help with IBS?Can stress make IBS worse?What is the role of genetics in IBS?How does physical activity affect IBS?