Brief Answer: Detailed below. Detailed Answer: Hello! Thank you for the query. Yellow stool color is most likely caused by your gallbladder issue. It does not accumulate the bile so it is secreted into the stool in increased amount. You male also have loose stools because of that. Constipation can be caused by several things including bad diet (low fiber intake, low mineral water intake), chronic bacterial infection, hypothyroidism, medicines (antidepressants, Ca-blockers) or colon cancer. As you are over the age of 50, colon cancer should be ruled out at first. Its because the risk of colon cancer significantly rises over the age of 50 and every person over 50 even if there is no symptoms should have colonoscopy every 10 years. So please start with colonoscopy. In a meanwhile you should improve your diet. Please avoid fatty foods, spicy foods, fried foods, alcohol, coffee (very important), chocolate, fruit juices. Start probiotic intake. Increase fiber rich products and mineral water intake. Gallbladder removal should be considered as well. If colonoscopy, diet change and gallbladder removal wont help, you should also have stool test and stool culture test. Please discus with your doctor Rifaximine treatment and Trimebutinum therapy. Hope this will help. Feel free to ask further questions. Regards.

---

Brief Answer: . Detailed Answer: No, you can not have it if there is no tumor or polyp. It takes about 10 years for the colon cancer to grow. The great majority of colon cancers appears in the polyp. To rule out any polyp colonoscopy is necessary so if you have had colonoscopy recently, colon cancer is almost impossible. Regards.

---